Best 45 Ah 12V Batteries in 2026

Daisy
Last Updated: Aug 2, 2026

At a Glance: Our Top Picks for 45 Ah 12V Batteries

Casil CA1240 Genuine 12V 4Ah SLA Alarm Battery (1 Pack)
#TOP1
Casil Ca1240 Genuine 12V 4Ah Sla Alarm Battery
9.8
PM SCORE
ExpertPower EXP1245 12V 4.5 Amp Rechargeable Battery for Security Systems
#TOP2
Expertpower Exp1245 12V 4.5 Amp Rechargeable Battery For
9.8
PM SCORE
ML18-12 - 12 Volt 18 AH, Nut and Bolt (NB) Terminal, Rechargeable SLA AGM Battery
#TOP3
Ml18-12 - 12 Volt 18 Ah, Nut And
9.8
PM SCORE

* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.

Summary of the Best 45 Ah 12V Batteries of 2026

Market Overview
45 Ah 12V Batteries Reviewed
  • Reviews Analyzed: 46749 Items
  • PM Avg. Rating: 7.5 / 10
18 Products Evaluated
  • Highest Price: $165.99
  • Lowest Price: $17.99
  • Avg. Price: $59.73

Casil Ca1240 Genuine 12V 4Ah Sla Alarm Battery (1 Pack)

CASIL
CA1240
3.54 X 2.76 X 3.98 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
CTS Warehouse 9.73

Features

Product Type :Battery

Package Dimensions :11.099 Cm L X 12.090 Cm W X 16.306 Cm H

Country Of Origin :China

Package Weight :3.0Lbs

Expertpower Exp1245 12V 4.5 Amp Rechargeable Battery For Security Systems

EXPERTPOWER
EXP1245
3.50 X 2.70 X 3.90 Inches
3.20 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Genuine ExpertPower Battery - The Most Trusted And Highest Reviewed Sealed Lead Acid Batteries On Amazon

Battery Type - 12 Volt 4.5 Amp/20 Hour Sealed Lead Acid Battery

Compatibility - Perfect Fit For A Wide Variety Of Applications Including Home Alarms, Electric Scooters, Ion Block Rockers, UPS Systems, and Much More.

Quality Assurance - Crafted Wtih A Rugged Construction, Our SLA Batteries Are Ultra Durable And Utilize Absorbed Glass Mat (AGM) Technology Which Provides A Wide Temperature Range.

User Friendly - Easy, One-Time Installation Of Our Maintenance Free and Valve Regulated Batteries Will Get Your System Or Application Running In No Time At All.

Ml18-12 - 12 Volt 18 Ah, Nut And Bolt (Nb) Terminal, Rechargeable Sla Agm Battery

MIGHTY MAX BATTERY
ML18-12
7.13 X 3.01 X 6.57 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Ml18-12 Sla Is A 12V 18Ah Sealed Lead Acid (Sla) Rechargeable Maintenance Free Battery

Dimensions 7.17 Inches X 3.03 Inches X 6.57 Inches Terminal Nut And Bolt Listing Is For The Battery And Screws Only No Wire Harness Or Mounting Accessories Included

Compatibility Yamaha 700 Yfm7Fg Grizzly 2007-2015 Fm12180 Briggs Stratton Generator B4489Gs Champion Generator 9000 7000 Generac 7500 Portable Generator Bp17-12 Gp12170 Es17-12 Jc-1270 Enduring 6-Dw-17 Powerland 10000 Watt Generator Enduring 6Fm18 Dr Field And Brush Mower Jump N Carry Jnc660 Jncair Jnc 660 Jnc4000 Vision Cp12180 Diehard 1150 Jump Starter Enduring Cd17-12 Troy-Bilt 7000 Watt Xp Generator 90508011 Craftsman Black Lawn Mowers Diehard Gold 950 Portable Jump Start

Rechargeable Battery That Can Be Mounted In Any Position Resists Shocks And Vibration Long Lasting High Performance In High And Low Temperatures

Ml5-12 - 12 Volt 5 Ah, F1 Terminal, Rechargeable Sla Agm Battery

MIGHTY MAX BATTERY
ML5-12
3.54 X 2.76 X 4.21 Inches
3.09 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

ML5-12 SLA is a 12V 5AH Sealed Lead Acid (SLA) rechargeable maintenance free battery - UL Certified

Dimensions: 3.58 inches x 2.76 inches x 4.21 inches. Terminal: F1. Listing is for the Battery only. No wire harness or mounting accessories included.

SLA / AGM spill proof battery has a characteristic of high discharge rate, wide operating temperatures, long service life and deep discharge recover.

Rechargeable battery that can be mounted in any position, resists shocks and vibration. Long lasting high performance in high and low temperatures

Backed by a 30 day refund policy and full 1 year warranty

Expertpower Exp1250 12V 5Ah Home Alarm Battery With F1 Terminals

EXPERTPOWER
EXP1250
3.54 X 2.79 X 3.98 Inches
3.40 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
ExpertPower Direct 9.90

Features

Genuine ExpertPower Battery - The Most Trusted And Highest Reviewed Sealed Lead Acid Batteries On Amazon

Battery Type - 12 Volt 5 Amp/20 Hour Sealed Lead Acid Battery With F2/F1 Terminals.

Compatibility - Perfect Fit For A Wide Variety Of Applications Including Home Alarms, Electric Scooters, Ion Block Rockers, UPS Systems, and Much More.

Quality Assurance - Crafted Wtih A Rugged Construction, Our SLA Batteries Are Ultra Durable And Utilize Absorbed Glass Mat (AGM) Technology Which Provides A Wide Temperature Range.

User Friendly - Easy, One-Time Installation Of Our Maintenance Free and Valve Regulated Batteries Will Get Your System Or Application Running In No Time At All.

Ml12-12F2 - 12 Volt 12 Ah, F2 Terminal, Rechargeable Sla Agm Battery

MIGHTY MAX BATTERY
ML12-12
6.25 X 4.25 X 4.00 Inches
7.30 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

ML12-12F2 SLA is a 12V 12AH Sealed Lead Acid (SLA) rechargeable maintenance free battery

Dimensions 5 94 inches x 3 88 inches x 4 00 inches Terminal F2 Listing is for the Battery only No wire harness or mounting accessories included

Compatibility Rollplay 12V Chevy Silverado Kid Trax Avigo Mini Cooper Peg Perego IAKB0501 Ride On Toy Pride Mobility Go Go Scooter Feber 12v Ferrari California CP12120 CP12120D Drive Medical Spitfire Scout 4 Wheel SFSCOUT4 Yuasa NP12-12 NP 6DZM-10 6-DZM-10 Daiwa 500 Electric Fishing Reel APC BackUPS ES750VA Broadband BE750BB Duracell Ultra DURA12-12 6-DGM-12 6-FM-12 Energy Power EP-SLA12-12T2 RAZOR DIRT BIKE MX500 Briggs and Stratton 198711GS Vision HP12-65W HP 12-65W

Rechargeable battery that can be mounted in any position resists shocks and vibration Long lasting high performance in high and low temperatures

Ml7-12 - 12 Volt 7.2 Ah, F1 Terminal, Rechargeable Sla Agm Battery

MIGHTY MAX BATTERY
ML7-12
6.25 X 2.75 X 4.25 inches
4.41 pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

ML7-12 SLA is a 12V 7.2AH Sealed Lead Acid (SLA) rechargeable maintenance free battery - UL Certified

Dimensions: 5.94 inches x 2.56 inches x 4.02 inches. Terminal: F1. Listing is for the Battery only. No wire harness or mounting accessories included.

SLA / AGM spill proof battery has a characteristic of high discharge rate, wide operating temperatures, long service life and deep discharge recover.

Rechargeable battery that can be mounted in any position, resists shocks and vibration. Long lasting high performance in high and low temperatures.

Backed by a 30 day refund policy and full 1 year warranty.

Nermak 2 Pack 12V 10Ah Lithium Ion Lifepo4 Deep Cycle Battery, 2000+ Cycles Rechargeable Battery For Solar/Wind Power, Ups, Scooters, Lighting, Power Wheels, Fish Finder And More, Built-In 10A Bms

NERMAK
12V 10AH-2PACK
5.94 X 2.56 X 3.70 Inches
2.65 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
NERMAK 9.65

Features

【Superior Performance】: Lithium iron phosphate battery has high energy density, Long cycle life, Good safety performance, No memory effect, etc. NERMAK LiFePO4 battery has built-in BMS protection to prevent overcharge, Over-discharge, Over-current and short circuit, and excessive low self-discharge rate ensuring up to 1-year maintenance-free storage.

【Long Cycle Times】: Lithium batteries 2000 + cycles no problem while the traditional lead-acid batteries only 200-300 cycles, More safety and environmentally friendly than lead-acid batteries.

【Widely Uses】: Widely uses in most areas such as: Lighting (LED strip etc), Scooters, 12V router, RV/outdoor camping, Power wheels, Fish finder, Kayak, Small UPS, Backup power, Ham Radio, Cellular remote camera, Solar/Wind power and more...

【Expansion and Recharge】Can be connected in series or parallel, in series, Up to 4 identical batteries can be connected,Quick charge by 6A , and heavy-duty output discharge up to 12A continuous and 10C Pulse.

【Warm Note】: 2*12 Volt Replacement lithium ion battery,12 months warranty, If you have any question for our product, Contact us: click the "Ask a question" on our storefront or in "YOUR ORDER" options click the "contact seller" (please use LiFePo4 special charger, with fully automatic SLA charger may not be fully charged)

Expertpower 12V 33Ah Rechargeable Deep Cycle Battery [Exp1233 ]

EXPERTPOWER
EXP12350
7.50 X 5.00 X 6.00 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Genuine ExpertPower Battery - The Most Trusted And Highest Reviewed Sealed Lead Acid Batteries On Amazon

Battery Type - 12 Volt 33Amp/10 Hour Sealed Lead Acid Battery

Quality Assurance - Crafted Wtih A Rugged Construction, Our SLA Batteries Are Ultra Durable And Utilize Absorbed Glass Mat (AGM) Technology Which Provides A Wide Temperature Range.

User Friendly - Easy, One-Time Installation Of Our Maintenance Free and Valve Regulated Batteries Will Get Your System Or Application Running In No Time At All.

Ml35-12 - 12 Volt 35 Ah Sla Battery- Mighty Max Battery Brand Product

MIGHTY MAX BATTERY
ML35-12
7.50 X 7.75 X 5.00 Inches
23.15 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Ml35-12 Sla Is A 12V 35Ah Sealed Lead Acid (Sla) Rechargeable Maintenance Free Battery

Dimensions 7 68 Inches X 5 16 Inches X 7 13 Inches Listing Is For The Battery And Screws Only No Wire Harness Or Mounting Accessories Included

Compatibility Deep Cycle Agm Solar Battery Replaces 33Ah 34Ah 36Ah Light Trolling Motor Sevylor Minn Kota Minn Kota Endura C2 Trolling Motor John Deere Tractor Riding Mower Yamaha Rhino Utility Vehicle Wilderness Tarpon 100 Kayak Trolling Motor Power Patrol Sla1155 Bat-Caddy X3R Golf Caddy Pride Mobility Jazzy Select Elite Power Chair Goal Zero Yeti 400 Solar Generator Doorking Power Inverter 1000 Sail 6-Gfm-33 Toro Time Cutter Ss5000 Mower Generac Od4575 Invacare Pronto M4

Sla / Agm Spill Proof Battery Has A Characteristic Of High Discharge Rate Wide Operating Temperatures Long Service Life And Deep Discharge Recover

Ml8-12 - 12 Volt 8 Ah, F1 Terminal, Rechargeable Sla Agm Battery

MIGHTY MAX BATTERY
ML8-12
5.94 X 2.56 X 3.94 Inches
5.00 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

ML8-12 SLA is a 12V 8AH Sealed Lead Acid (SLA) rechargeable maintenance free battery - UL Certified

Dimensions: 5.94 inches x 2.56 inches x 4.02 inches. Terminal: F1. Listing is for the Battery only. No wire harness or mounting accessories included.

SLA / AGM spill proof battery has a characteristic of high discharge rate, wide operating temperatures, long service life and deep discharge recover.

Rechargeable battery that can be mounted in any position, resists shocks and vibration. Long lasting high performance in high and low temperatures.

Backed by a 30 day refund policy and full 1 year warranty.

Ml55-12Gel -12 Volt 55 Ah, Gel Type, Internal Thread (Int) Terminal, Rechargeable Sla Agm Battery

MIGHTY MAX BATTERY
3515112
9.02 X 5.43 X 9.13 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

ML55-12GEL is a 12V 55AH GEL rechargeable maintenance free battery - UL Certified

Dimensions: 9.02 inches x 5.43 inches x 9.13 inches. Listing is for the Battery and Screws only. No wire harness or mounting accessories included

True deep cycle battery that can be mounted in any position, Resists shocks and vibration. Long lasting high performance in high and low temperatures.

Factory activated GEL battery. Maintenance free. No acid pack needed. Advanced design works right out of the box and requires no maintenance yet offers the option to prolong the standard life by adding extra electrolytes.

Backed by a 30 day refund policy and full 1 year warranty.

Expertpower 12V 20Ah Lithium Lifepo4 Deep Cycle Rechargeable Battery | 2500-7000 Life Cycles & 10-Year Lifetime | Built-In Bms | Perfect For Rv, Solar, Marine, Overland, Off-Grid Applications

EXPERTPOWER
EP1220
7.10 X 3.00 X 6.60 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
ExpertPower Direct 9.90

Features

Trusted by Industry Professionals and Installers: With a proud legacy of 36 years in the industry, now our LiFePO4 batteries have earned widespread adoption across various industries, endorsed by professionals and installers alike. Selling over a million batteries and over 80 Megawatt-hours of energy every year and growing, our track record speaks volumes about our product's reliability and performance.

Unmatched Cell Technology: Our LiFePO4 batteries are crafted using state-of-the-art cells, setting a new standard in battery design. Our cells recently ranked #3 globally in shipping by volume. Held to the highest standards and quality checks, our cells make our batteries outshine the rest. Our LiFePO4 batteries provide 4000 to 7000 cycles & a 10-years expected lifetime compared to others in the industry.

Cutting-Edge BMS for Superior Battery Performance: With our proprietary Battery Management System (BMS), precisely optimized to complement our specific cells, you can expect maximum useful life and unparalleled battery protection, ensuring years of uninterrupted enjoyment. Our industry leading built-in Battery Management System (BMS) protects the battery cells from overcharge, deep discharge, overloading, overheating, low-temperatures and short circuits.

Unparalleled Resilience through Rigorous Testing: Our prismatic cells undergo rigorous testing across a multitude of conditions: from puncturing, to fire, short circuit, and even high impact damage, our cells are tested against all types of damage, providing outstanding resilience and the peace of mind you deserve.

The Expert Promise: Experience Hassle-Free Purchasing with Our Unwavering Warranty and World-Class Tech Support: When you choose our LiFePO4 batteries, rest assured of a seamless and reassuring buying process, backed by our exceptional warranty and dedicated technical support.

#TOP14

3 Pack Expertpower 12 Volt 12 Ah Rechargeable Battery || Exp12120 Size 3 Pack - 12V 12 Ah

EXPERTPOWER
EXP-12120-3-1
5.94 X 3.86 X 3.74 Inches
24.00 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
ExpertPower Direct 9.90

Features

GENUINE EXPERTPOWER BATTERY - The Most Trusted And Highest Reviewed Sealed Lead Acid Batteries On Amazon.

BATTERY TYPE -3 Pack 12 Volt 12 Amp 20 Hour Sealed Lead Acid Battery With F2 Style Terminals. Dimensions: L 5.94* W 3.86* H 3.70

RUGGED CONSTRUCTION - The High Impact Resistant Battery Case Is Made Up Of A Non-Conductive ABS Plastic. This Material Has a Strong Resistance To Shock, Vibration, Chemicals and Heat.

AGM TECH - The Acid Inside Is Absorbed Between The Plates And Thereby Immobilized By A Very Fine Fiberglass Mat. This Along With The Valve Regulated, Spill-Proof Design Of Our Batteries Allows Trouble-Free, Safe Operation In Any Orientation.

USER FRIENDLY - Easy, One-Time Installation Of Our Maintenance Free and Valve Regulated Batteries Will Get Your System Or Application Running In No Time At All.

Battery 6V 6 Volt Sla Vrla Rechargeable 4, 4.5,5 Ah

POWERSTAR
UB645
2.75 X 2.50 X 3.98 Inches
2.00 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Blue Grass Wholesale 9.82

Features

Completely maintenance-free design

L- 2.76 W- 1.89 H- 3.102

Advanced AGM Technology

Works in many Applications, Alarm, Exit Lights, Electric Scoots and more

PowerStar Brand and 2 Year Warranty

Neptune Replacement Razor Ground Force Version 13+ Battery 12V 7Ah - 2 Pack

NEPTUNE POWER PRODUCTS
NT1270 F1
5.94 X 2.76 X 3.78 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
AAA Security Depot USA 9.75

Features

Neptune Brand 12V 7AH F1 – NT1270F1 battery. Dimensions: (L) 5.94” x (W) 2.56” x (H) 3.94”. Our 12V-7AH-F1 Sealed Lead Acid rechargeable batteries meet or exceed the OEM SLA battery specifications. We supply only brand new, factory fresh, high-quality batteries. We guarantee the best price and 100% compatibility with your 12V-7AH-F1 Sealed Lead Acid battery model. The replacement SLA batteries also include one year warranty. All replacement batteries are UL listed as well.

Popular uses: BladeZ, eLite 250, Razor electric chopper, go-kart, pocket bike, electric dirt bike parts (check size) Compatible with BACK-UPS XS 1300VA BX1300LCD (Need to Reuse Existing Connectors and Wires). iZip I-200 electric scooter (check size),Star II electric scooters (check size).

AGM Tech - Utilizes Absorbed Glass Mat (AGM) Technology and VALVE REGULATED; Made Up of Non-Conductive ABS Plastic, Strong resistance to shock, vibrations, and heat.

Replacement for: BP7.5-12, GP1272, GS12V7AH,6-DW-7, CB7-12, FP1270, FP1272, FP1275, FP1285, FP1290, HGL7.2- 12, HGL8.5-12, GPS7.2-12,6-DFM-7,6-DFM-9, WP7-12,6FM6, WP7-12, LCR12V7.2P, PM1270, LA1270, SLA7-12, NP7- 12, CB7-12.

To find the best replacement for your battery, compare the physical dimensions, Volts and Amp power of your original model to what we have listed as a recommended replacement, you also need to check battery terminals. (The metal connectors on top of the battery). Includes 30 day refund policy and full 1 year warranty and lifetime tech support. Amazon doesn't deal with the return of battery-related products, so please contact us directly. Our Neptune support team is on STANDBY FOR YOU!

#TOP17

Ritar Ra12-45 12V 45Ah Nb Replacement Battery

UPS BATTERY CENTER
RIT-RA12-45-BATT
29.80 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
UPSBatteryCenter 9.70

Features

Ritar RA12-45 Replacement Battery

12V 45Ah, NB Terminal

Built for Superior Performance

100% OEM Compatible

1 Year Replacement Warranty

Neptune Replacement Razor Ground Force Version 13+ Battery Upgrade 12V 9Ah - 2 Pack

NEPTUNE POWER PRODUCTS
NT1290 F2
5.94 X 2.76 X 3.78 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING

Features

This includes a Neptune 12V-9AH-F2 battery. Size: 5.94”2.56”3.94”. Our 12V-9AH-F2 Sealed Lead Acid rechargeable batteries meet or exceed the OEM SLA battery specifications. We supply only brand new, factory fresh, high-quality batteries. We guarantee the best price and 100% compatibility with your 12V-9AH-F2 Sealed Lead Acid battery model. The replacement SLA batteries also include one year warranty. All replacement batteries are UL listed as well.

Replaces BP7.5-12, GP1272, GS12V7AH,6-DW-7, CB7-12, FP1270, FP1272, FP1275, FP1285, FP1290, HGL7.2- 12, HGL8.5-12, GPS7.2-12,6-DFM-7,6-DFM-9, WP7-12,6FM6, WP7-12, LCR12V7.2P, PM1270, LA1270, SLA7-12, NP7- 12, CB7-12.

Used for BladeZ eLite 250, Razor electric chopper, go-kart, pocket bike, electric dirt bike parts (check size) Compatible with APC BACK-UPS XS 1300VA BX1300LCD (Need to Reuse Existing Connectors and Wires). iZip I-200 electric scooter (check size), Star II electric scooters (check size).

AGM Tech - Utilizes Absorbed Glass Mat (AGM) Technology and VALVE REGULATED; Made Up of Non-Conductive ABS Plastic, Strong Resistance to Shock, Heat.

To find the best replacement battery you need to compare the physical dimensions, Volts and Amp power of your model to what we have listed as a recommended replacement, you also need to check battery terminals. (The metal connectors on top of the battery). Includes 30 day refund policy and full 1 year warranty. Amazon doesn't deal with the return of battery-related products, so please contact the seller directly. Our Neptune support team is on standby for YOU.

Top 10 12v batteries 45 ah Brands on Amazon

Here is the list of top-rated brands that were evaluated by PM.

Brand Count
Mighty Max Battery 7
Expertpower 5
Neptune Power Products 2
Casil 1
Nermak 1
Powerstar 1
Ups Battery Center 1

Top 10 12v batteries 45 ah Brands Pie Chart


We've carried out a comprehensive analysis of 46,749 reviews on 12v batteries 45 ah, using our selection criteria to identify the best options in the health & household products. Our findings reveal that most customers typically select 12v batteries 45 ah priced around $59.73, with top brands including neptune power products, ups battery center, mighty max battery, npp, expertpower, casil, nermak and licb and powerstar

Our team of expert editors reviewed these high-quality items and handpicked the top 18 12v batteries 45 ah for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the health & household products category. These include aaa security depot usa, upsbatterycenter, amazon.com, nppower international inc, expertpower direct, cts warehouse, nermak and licb and blue grass wholesale .

We are dedicated to assisting our users in finding the right batteries Products based on their needs, saving them considerable time when choosing which 12v batteries 45 ah to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.