Our readers keep the lights on and my morning glass full of iced black tea. As an Amazon Associate, I earn from qualifying purchases.
Specs are compiled from manufacturer listings and verified buyer reviews and can change over time — please confirm the key details on the product page before buying.
You need a battery that keeps your trolling motor running all day, recharges easily, and won’t leak acid into your boat. AGM (Absorbed Glass Mat — a technology where the acid is held in fiberglass mats so nothing spills) batteries deliver that. But with capacity measured in amp hours and weight ranging from 26 to 75 pounds, the wrong pick can leave you paddling back to the ramp.
I’m Min — the founder and writer behind Gadgets Feed. This guide is built by comparing the manufacturers’ published specifications and the patterns across verified customer reviews, so you get each pick’s real strengths and trade-offs instead of marketing spin.
If you fish from a small kayak on weekends or run a 20-foot rig on big water, the best overall pick for most anglers is the VMAX MR127 — a 100Ah (amp-hour, which means it delivers 100 amps for one hour, or 10 amps for 10 hours) battery that handles a 55-pound-thrust motor for over five hours. Its heavy-duty lead-tin alloy grids resist damage from repeated discharge better than the lighter Weize 100Ah. For kayak anglers who carry their battery to the water, the Newport 50Ah at 32 pounds is a smarter fit.
Quick Picks
- VMAX MR127 12 Volt 100Ah AGM Deep Cycle Battery — Top Performer
- Renogy Deep Cycle AGM 12 Volt 100Ah Battery — Best Value 100Ah
- Weize Deep Cycle AGM 12 Volt 100Ah Battery — Budget Champion
- Newport 12V50Ah Deep Cycle AGM Marine Battery — Lightweight Pick
- VMAXTANKS V35-857 12 Volt 35AH AGM Marine Battery — Compact Value
- QTY2 VMAX MR137-120 12V 120AH AGM Deep Cycle Batteries — Pro Combo
- Qty 2 VMAX MR127-100 100Ah AGM Deep Cycle Batteries — Best 24V Value
How To Choose The Best AGM Trolling Motor Battery
AGM (Absorbed Glass Mat) batteries are sealed and spill-proof. You never have to add water. But picking the right one means matching the power your trolling motor draws with the capacity and weight you can handle. You match three specs: amp hours, weight, and physical dimensions.
Amp-Hours (Ah): The Runtime You Actually Get
The amp-hour (Ah) rating tells you how much energy the battery holds — a 35Ah battery delivers 35 amps for one hour, or one amp for 35 hours. A 100Ah battery gives you 100Ah versus 35Ah. You match this to your motor’s thrust and how long you typically fish. A 30-pound thrust motor on low draws about 6-7 amps (the current it pulls from the battery). A 55-pound motor at moderate speed pulls closer to 12-15 amps.
Weight and Physical Size
A 100Ah AGM battery weighs around 57 to 68 pounds. That weight is the lead inside — heavier generally means more active material and higher capacity for longer cycles. Make sure your battery tray can hold the dimensions and that you can lift the battery in and out of the boat. A 35Ah battery is about 26 pounds and fits smaller spaces, while a Group 27 or Group 31 100Ah unit takes up more room. Group size is a standard that defines the battery’s physical case dimensions.
Quick Comparison
| Model | Best For | Capacity (Ah) | Weight (lbs) | Dimensions (inches) | Amazon |
|---|---|---|---|---|---|
| VMAX MR127 | Solo anglers running 40-55lb thrust motors | 100Ah | 68 lbs | 12.9 x 6.8 x 8.7 | $259.96Amazon |
| Renogy Deep Cycle AGM 100Ah | RVers and off-grid cabin owners | 100Ah | 63.9 lbs | 13.1 x 6.9 x 8.6 | $208.99Amazon |
| Weize Deep Cycle AGM 100Ah | Budget-conscious long-runtime users | 100Ah | 57 lbs | 6.73 x 12.99 x 8.43 | $143.99$159.99Limited time dealAmazon |
| Newport 12V50Ah AGM | Kayak and small-boat anglers | 50Ah | 32 lbs | — | $129.99Amazon |
| VMAXTANKS V35-857 | Compact replacement and Goal Zero yeti | 35Ah | 26 lbs | 7.7 x 5 x 6.1 | $109.94Amazon |
| QTY2 VMAX MR137-120 | 24V 80lb trolling motors on larger boats | 120Ah each | 75 lbs each | 12.9 x 6.8 x 8.7 each | $519.95Amazon |
| Qty 2 VMAX MR127-100 | 24V setups needing two Group 27 batteries | 100Ah each | 68 lbs each | 12.9 x 6.8 x 8.7 each | $539.96Amazon |
In‑Depth Reviews
1. VMAX MR127 12 Volt 100Ah AGM Deep Cycle Battery
A 100Ah (amp-hour) workhorse that handles a 55-pound Minn Kota for over five hours and reportedly still shows 95% charge.
This Group 27 AGM battery gives you the benchmark runtime solo anglers need for a full day on the water. It weighs 68 pounds — noticeably heavier than the 63.9-pound Renogy — but that extra lead means sustained output. Buyers report it runs a 40-pound and 55-pound Minn Kota motor for over five hours and the voltage barely dips. One reviewer ran it for six hours a day, recharged every other day, and only once saw the charge fall below half.
The sealed design with marine terminals (corrosion-resistant connectors made for wet environments) means you install it in any orientation without worrying about leaks. Its electrolyte (acid) suspension system uses Absorbed Glass Mat with no silica gels (a thickening agent used in gel batteries), so the acid stays locked in the mats even if you tip the battery. The trade-off? At 68 pounds, lifting it in and out of a small boat requires real effort — this is not a battery you casually swap mid-trip.
Unlike the lighter Weize 100Ah (57 pounds), the VMAX MR127 uses heavy-duty lead-tin alloy grids (internal metal frames that hold the active material). The manufacturer says these provide an extra margin of performance and service life even after repeated over-discharges. One reviewer paired two in series (wired positive to negative for a 24V system) for an 86-pound-thrust motor and saw the voltage drop from 26.4V to only 24.2V after four hours of use.
Why solo anglers pick this
- True Grade-A AGM deep cycle chemistry from VMAX
- Handles constant high-draw use without voltage sag (a drop in power under load)
- Included carrying handles make the 68 lbs manageable
- Sealed AGM — no water check needed
The one downside
- Heavy at 68 lbs for daily removal
- Needs a Group 27 battery box; verify your tray fits
Your all-day fishing partner: If you run a 40-55 lb thrust motor and want a single battery that lasts the whole day, the VMAX MR127 delivers proven runtime and durability. Its heavy-duty grids beat the Weize 100Ah for long-term abuse.
Heads-up: If you lift your battery in and out after every trip, consider the lighter 50Ah Newport below to save your back — the VMAX is heavy.
2. Renogy Deep Cycle AGM 12 Volt 100Ah Battery
A widely-trusted 100Ah battery that combines a lower self-discharge rate (how fast it loses charge when not used) with a lower weight than the other 100Ah picks.
Renogy has sold over 230,000 units of this battery, and the specs back up the popularity. It holds 100 amp hours of capacity, weighs 63.9 pounds, and measures 13.1 x 6.9 x 8.6 inches — slightly longer than the Weize but roughly the same footprint. Its self-discharge rate falls below 3% per month at 77°F (room temperature), meaning you can store it for weeks between fishing trips without needing a top-off charge. Buyers with RVs report using two in parallel (wired positive to positive for more capacity) for years without issues. One reviewer who set up an 800 Ah bank (eight batteries in parallel) tested the discharge across five days and confirmed the batteries met their rated capacity within 1.5%.
The Renogy handles extreme temperatures well — the upgraded electrolyte (acid) formula keeps discharge performance solid from -4°F up to 140°F. That matters if you store the boat in an unheated garage during winter or fish in desert heat. Unlike the 68-pound VMAX MR127, the Renogy is 4.1 pounds lighter, making the install slightly easier on your lower back.
One honest trade-off: a reviewer noted that the battery failed to hold voltage above 11.6V (a 12V battery is fully charged at about 12.8V) after sitting in freezing temperatures, though a float-charge (a low, slow charge that maintains full capacity) overnight recovered it completely. That is worth knowing if you live in a climate where the battery will sit below 32°F for days.
Why it earns its reputation
- Widely used and reviewed — over 230k units sold
- Low self-discharge (under 3% per month)
- Works in extreme temperatures (-4°F to 140°F)
- Supports series and parallel connections (up to 4)
What to watch for
- Cold weather may temporarily lower voltage
- At 63.9 lbs, not as heavy-duty as VMAX MR127
Versatile and tested: This is a great pick for boaters who also want one battery for RV, solar, or cabin backup use — the proven track record and temperature range make it a safe bet.
Consider the VMAX MR127 if: you need the absolute max cycle life from a single battery; the MR127 uses slightly heavier-duty grids.
3. Weize Deep Cycle AGM 12 Volt 100Ah Battery
The lightest 100Ah AGM on this list at 57 pounds, saving you nearly 12 pounds versus the VMAX MR127 — so you can get the same capacity with less back strain.
Weize packs the same 100 amp hours into a battery that is 12.99 x 6.73 x 8.43 inches — slightly narrower than the Renogy but the same basic footprint. That weight difference matters: 57 pounds is still heavy, but it is 6.9 pounds lighter than the Renogy (63.9 lbs) and 11 pounds lighter than the VMAX MR127 (68 lbs). Owners mention that the battery holds stable voltage and that one unit powered a ventilator backup for about 24 hours. Compared to a 35Ah battery that gave them 8-9 hours, the Weize tripled their runtime. One reviewer ran a set for five years, including two years of heavy abuse where the battery was taken near 0% (fully discharged) daily, and they still worked.
The self-discharge rate sits at 1-3% per month, allowing long storage without frequent charging. The charging temperature range goes from 14°F to 122°F, and discharging works from 5°F to 122°F. That makes it usable in most climates, though the best operating temperature is 77°F. A few customers note one terminal (the metal post where cables connect) corroded after a year in one case, but the battery still functioned.
For the price, you get a 100Ah AGM that weighs less than competitors and still delivers the same capacity. The downside is the 1-year warranty is standard, and customer support routes through the seller directly, not Amazon.
Why value hunters pick this
- 100Ah capacity in a 57-pound package
- Low self-discharge (1-3% per month)
- Proven lifespan — one buyer got five years
- Budget-friendly entry to 100Ah range
Things to note
- Terminal corrosion reported in isolated cases
- Warranty support handled by manufacturer, not Amazon
Best 100Ah for the money: If you want the full 100-amp-hour runtime without paying for the premium VMAX or Renogy badge, the Weize reliably delivers.
Pass if: you want the longest possible cycle life from a single battery — the VMAX MR127 uses heavier duty grids, so spend more there.
4. Newport 12V50Ah Deep Cycle AGM Marine Battery
A 32-pound battery one person can carry in one hand, yet it still powers a 55-pound thrust motor for over four hours — ideal for kayak or jon boat runs.
Newport designed this battery for anglers who need to move their battery — kayakers, small jon boat owners, anyone who carries gear to the water. At 32 pounds versus the Weize 100Ah at 57 pounds and roughly the weight of two large watermelons. Reviewers point out it delivers steady power for four or more hours on a 55-pound trolling motor at moderate speeds, with stable voltage and no heat buildup. One reviewer took their daughter out on a two-person kayak for a full day of fishing off this single battery. Another powered a small rowboat for six hours and had over half the charge remaining. Its sealed AGM construction means it can ride in any position without spilling.
The 50Ah capacity is half of the 100Ah batteries above, so your runtime is roughly half. For a typical morning of fishing on small waters, that is often plenty. The 32-pound weight also makes it the easiest battery to install and remove on this list. Unlike the compact 26-pound VMAXTANKS V35-857, the Newport gives you 50Ah versus the VMAXTANKS V35-857’s 35Ah, at 32 pounds versus 26 pounds.
The trade-off is no built-in charge indicator — you need a multimeter (a handheld tool that measures voltage) or a smart charger to know the exact state of charge. But for the lightweight advantage and sealed AGM durability, that is a minor compromise.
Best for small boats
- Lightweight at 32 lbs — one person can carry it comfortably
- Runs a 55lb trolling motor for 4+ hours at moderate speed
- Sealed AGM, no maintenance or leaks
- Survived a 20 mph tumble from a truck bed with only cosmetic damage (shoppers say)
Know before you buy
- No built-in charge indicator
- 50Ah is half the capacity of a 100Ah battery
Take it anywhere: For kayak anglers and small-boat fishermen who prioritize portability over marathon runtime, the Newport is the lightest power-packed option here.
Upgrade to a 100Ah: If you need to run a trolling motor all day on big water, step up to the Weize or VMAX MR127.
5. VMAXTANKS V35-857 12 Volt 35AH AGM Marine Battery
A compact 35Ah battery at just 26 pounds that fits tight spaces and portable power stations — but you sacrifice runtime for that small size.
The VMAXTANKS V35-857 is the smallest battery here at 7.7 x 5 x 6.1 inches and 26 pounds. It is designed specifically for 30-pound-thrust trolling motors and for replacing batteries in Goal Zero Yeti 400 units (a popular portable power station) — multiple buyers confirm it fits perfectly. The manufacturer’s runtime figures give you a clear picture: 1.2 hours at full throttle, 3.5 hours at medium speed, and 5.8 hours at low speed on a 30-pound-thrust motor. Those are factory estimates, not guesses. In a 100Ah world, 35Ah looks small, but for small dinghies, kayaks, or portable generator backup, the size and weight trade-off is worth it.
The military-grade lead-tin plates (internal grids designed to withstand vibration and shock) add extra durability against rough handling. The battery is sealed and maintenance-free, so you can install it in any orientation. The manufacturer recommends VMAX chargers BC1204 or BC1205. One buyer used it as an AGM replacement for a Goal Zero Yeti 400 and said it added capacity and runtime within the 400W limit. Another reviewer mentioned that AGM batteries can get damaged if fully discharged, and that the handle aids installation. The main limit, of course, is the 35Ah capacity — compare that to the 100Ah of the Renogy or VMAX MR127, and you are looking at 35Ah versus 100Ah.
At 26 pounds, this is the easiest battery to lift and store. If you need a lightweight power source for short fishing trips or to revive a portable power station, the V35-857 is a proven compact solution.
Great for tight spaces
- Compact size and 26-pound weight — easy to carry
- Official runtime specs: 1.2h at WOT, 3.5h medium, 5.8h low
- Perfect fit for Goal Zero Yeti 400
- Military-grade lead-tin plates for durability
Limitations
- Only 35Ah — short runtime on larger motors
- One reviewer noted capacity degraded after 3 years
Compact and capable: Ideal if you fish small waters with a 30-pound-thrust motor or need a lightweight replacement for a portable power station.
Grab a 100Ah instead: If you run a 55-pound motor and fish all day, step up to the VMAX MR127 or Weize.
6. QTY2 VMAX MR137-120 12V 120AH AGM Deep Cycle Batteries
Two 120Ah Group 31 batteries that together sustain a 24V 80lb trolling motor for full-day runs on big water — the choice for tournament anglers.
If you run a 24-volt trolling motor (common on 18-foot and larger center-console boats), you need two 12V batteries wired in series. The VMAX MR137-120 kit delivers two 120Ah Group 31 batteries, each weighing 75 pounds and measuring 12.9 x 6.8 x 8.7 inches. That is 120Ah per battery, which is 20Ah more per battery than the 100Ah VMAX MR127. For a 24-volt system running an 80-pound-thrust Minn Kota Riptide RT80, buyers report all-day use on spot lock (a GPS anchor feature that holds position automatically) in moving water. One reviewer ran it for five hours of jigging with a Terrova 80 and the battery still showed full charge. Another runs two in parallel for a 12V 55-pound-thrust motor and uses them all weekend without dropping below 50%.
These are sealed AGM, maintenance-free, and can be mounted in any position. The high-performance AGM technology resists shocks and vibration — important on a boat that bounces through chop. The 8mm terminals (thicker than standard posts) provide solid connection points, and the battery includes a 1-year warranty with a 30-day satisfaction guarantee. The 75-pound weight per battery means the combined kit is 150 pounds — you are not moving these casually, but for a fixed installation on a larger boat, that is the price of serious reserve power. The VMAX MR137-120 uses the same electrolyte suspension system and heavy-duty lead-tin grids as the single MR127, just in a larger Group 31 case with 20 more amp-hours.
Compared to the Qty 2 VMAX MR127-100 kit (two 100Ah batteries), this MR137-120 kit gives you 120Ah per battery versus 100Ah. For anglers who fish tournaments or spend 10+ hours on the water, that extra 20Ah per battery can mean not worrying about the meter dipping into the red before the final cast.
Serious power for serious anglers
- 120Ah per battery for extended 24V runtime
- All-day spot lock performance on 80lb motors
- Sealed AGM resists shocks and vibration
- Rated for 24V trolling motor systems
Consider this trade-off
- Each battery weighs 75 lbs — total kit is 150 lbs
- Premium tier investment for serious anglers
Built for big-water days: This kit suits tournament anglers and owners of 18-22 foot boats with 24V 80lb motors who need uninterrupted power from sunrise to sunset.
Too much for small boats: If you run a 12V system on a kayak or small jon boat, one 100Ah battery is far more practical and lighter.
7. Qty 2 VMAX MR127-100 100Ah AGM Deep Cycle Batteries
Two 100Ah Group 27 batteries in one box — the standard 24V setup for 80lb thrust motors without paying for the extra capacity you may not need.
This kit gives you two of the same VMAX MR127-100 batteries (each 100Ah, 68 lbs, Group 27 size) wired for a 24-volt trolling motor system. At 100Ah per battery, the total 24V capacity is 100 amp-hours — exactly what most 24V 80-pound-thrust motors need for a full day. The batteries fit any Group 27 battery box and are compatible with the MinnKota trolling motor power center. Owners mention excellent packaging with thick foam, and the batteries held their charge for months in storage. One reviewer installed these in an Arctic Fox 990 truck camper, found they fit a 12-inch-wide tray perfectly, and appreciated avoiding electrolyte maintenance.
The same construction as the single MR127 applies here — electrolyte suspension system using high-porosity absorbed glass mat, heavy-duty lead-tin alloy grids, and sealed maintenance-free operation. The 68-pound weight per battery is the same as the single MR127 reviewed above. Compared to the QTY2 VMAX MR137-120 kit (two 120Ah batteries), this MR127-100 kit saves you the extra cost of the higher-capacity batteries. If you do not need the extra 20Ah per battery, the MR127-100 pair is the more budget-conscious choice.
One buyer mentioned that one of the two batteries failed within a year (showing 11.7V OCV — open circuit voltage, a full charge for a 12V battery is about 12.8V), though customer service eventually provided a replacement at a discount. That is a rare case — most reviews are positive. The 1-year warranty covers replacements. These batteries come in a 2-count pack, meaning the box itself weighs about 136 pounds total, so plan for a dolly or a helper for the initial install.
Why this dual-kit works
- 100Ah per battery — the standard 24V match for 80lb motors
- Fits Group 27 battery boxes and MinnKota power centers
- Sealed AGM, zero maintenance
- Excellent packaging protection reported by buyers
What to watch
- Occasional failure of one battery in the pair reported
- Combined kit weight of ~136 lbs requires careful handling
The smart 24V standard: The MR127-100 pair gives you the exact runtime most anglers need at a lower investment than the MR137-120, provided you don’t need the extra 20Ah.
Buy the MR137-120 instead if: you fish tournaments or need every extra amp-hour you can get — the 120Ah pair costs more but buys you 20% more runtime.
Understanding the Specs
Amp Hours (Ah) — Your Runtime Currency
The amp-hour (Ah) rating tells you how much total energy the battery stores. A 35Ah battery can deliver 35 amps for one hour, or 7 amps for five hours. A 100Ah battery delivers 100 amps for one hour, or 10 amps for ten hours. Your trolling motor draws a certain number of amps depending on its thrust and speed setting. A 30-pound-thrust motor on low draws about 6-7 amps; a 55-pound motor on moderate speed draws roughly 12-15 amps. Divide your battery’s Ah by your motor’s amp draw to get a rough runtime in hours. For example, a 100Ah battery running a motor that draws 12 amps gives you about 8.3 hours of runtime.
AGM vs Flooded vs Gel — What AGM Means for You
AGM stands for Absorbed Glass Mat. The electrolyte (the liquid that stores energy) is absorbed into thin fiberglass mats between the lead plates. That means no free-flowing acid — the battery is sealed, leak-proof, and can be mounted in any orientation without spilling. You never need to check fluid levels or add water. Flooded batteries (the old-school type) require regular water top-offs and can spill acid if tipped. Gel batteries use a thickened electrolyte but are more sensitive to overcharging. AGM hits the balance for marine use: it is tough, low-maintenance, and handles deep discharges (taking the battery down to low charge repeatedly) better than flooded batteries.
FAQ
How long will a 100Ah AGM battery run my trolling motor?
Can I use a regular car battery for my trolling motor?
What size AGM battery do I need for a 24V trolling motor?
How heavy is a 100Ah AGM battery?
Do AGM batteries need a special charger?
Can I mount an AGM battery on its side?
What is the difference between Group 27 and Group 31 batteries?
How long do AGM trolling motor batteries last?
Can I mix a 100Ah battery with a different capacity in a 24V setup?
Final Thoughts: The Verdict
For most anglers running a single 12V motor, the best agm trolling motor battery is the VMAX MR127 because it blends proven 100Ah runtime with heavy-duty grid construction and a reputation for reliability. If you need an excellent all-around 100Ah battery that also works for RV and solar setups, the Renogy Deep Cycle AGM is a trusted choice. For kayak anglers and those who carry their battery to the water, the Newport 12V50Ah at 32 pounds is the lightest power-packed option here.
How We Picked
We do not accept paid placement. Every pick is matched to a real buyer and a real use-case; we do not hands-on test units.
Sources & Methodology
Specifications: manufacturer listings and product documentation. Review insights: verified customer reviews, as of July 2026. Pricing: not shown on this page (it changes often); check the current price via the retailer link.
As an Amazon Associate, Gadgets Feed earns from qualifying purchases. This does not affect which products we feature.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product. As an Amazon Associate I earn from qualifying purchases.
CERTAIN CONTENT THAT APPEARS ON THIS SITE COMES FROM AMAZON. THIS CONTENT IS PROVIDED "AS IS" AND IS SUBJECT TO CHANGE OR REMOVAL AT ANY TIME.
Amazon and the Amazon logo are trademarks of Amazon.com, Inc. or its affiliates.