10 Best Batterie 4v 4ah 20hr of 2025

Tested and Reviewed: Top 10 Batterie 4v 4ah 20hr deals with expert ratings from 8.1 to a perfect 10

March 2026 Edition

Editor's Choice

9.7

LivingSURE

LivingSURE Battery 20V 4Ah

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Editor's bottom line:

“This batterie 4v 4ah 20hr is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Reliable Power for Every Project: This 20V 4Ah cordless tool battery by LivingSURETM delivers consistent, dependable power to keep your tools performing at their best, so you can tackle DIY and home improvement tasks with confidence
Lightweight and Easy to Handle: Weighing just 1.25 lbs., this compact battery slides and locks into place quickly, allowing fast swaps that keep your workflow moving without interruptions
Quick Charging Convenience: Built-in indicator lights let you check charge levels at a glance, and the battery fully recharges in just 300 minutes when used with the LivingSURETM Battery Charger (sold separately)
Versatile Performance Upgrade: A smart choice for powering a range of LivingSURETM cordless tools, helping you stay prepared for everything from small fixes to bigger projects
LivingSURETM Quality You Can Trust: Designed for dependable performance and long-lasting use, this power tool battery makes a reliable addition to your tool collection;
WERE PROUDLY PART OF THE SILVER STAR BRANDS FAMILY: With a rich history of delivering quality & innovation, our trusted brands include Miles Kimball, Walter Drake, Easy Comforts, Exposures, Dream Products, Paula Young & Native Remedies. From creating distinctive outdoor Gaggleville décor to offering convenient do-it-yourself will kits, we specialize in providing unique solutions that enhance lives, homes, & well-being.Our commitment to excellence ensures premium products for every customer need
DISCOVER QUALITY AND TRUST ACROSS OUR FAMILY OF BRANDS: Holiday Peak simplifies your festive decorating, OakRidge brings quality home decor, Gaggleville adds charm with porch goose outfits, and LivingSURE completes this family with its functional products including power tools, pillows, ladders, stepstools, cleaning products and more.

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Picked by 397 people today

9.5

WEECONACO

WEECONACO 2 20V 4ah Battery

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Main Highlights

WEECONACO Battery for 40V tiller. It included 2 20V 4 ah battery

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9.5

Mighty Max Battery

Mighty Max Battery 4 Volt 4.5 Ah Sealed Lead Acid Battery Brand Product (Pack of 1)

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Main Highlights

ML4.5-4 SLA is a 4V 4.5AH Sealed Lead Acid (SLA) rechargeable maintenance free battery - UL Certified
Dimensions: 1.89 inches x 1.89 inches x 4.25 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

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9.2

Shentec

Shentec 2 Pack 4V 4.0Ah Lithium-Ion Battery Compatible with Milwaukee 48-11-2001,M4,M-4,2101-20,4932430098, 45242298150

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Main Highlights

Voltage: 4V; Capacity: 4.0Ah; Type: Li-ion.
Compatible with Milwaukee 48-11-2001,M4,M-4,2101-20,4932430098, 45242298150
No memory effect and low self-discharge for maximum productivity and less downtime.
CE, FCC and RoHS certified, 100% compatible with the originals.
No memory effect and low self-discharge for maximum productivity and less downtime.

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9.0

Joiry

Joiry 4V 4000mAh Replacement Li-ion Battery with Higher Safety & Longer Runtime - Compatible with Ryobi AP4001, AP4302, AP4700, TEK4, RP4020, RP4300, RP4400, RP4520, RP4530, RP4900 (2-Pack)

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Main Highlights

Replacement Li-ion BatteryVoltage: 4 Volt. Battery Type: Li-ion. Capacity: 4000mAh. The upgraded and improved high capacity battery will show you outstanding performance over the original battery.
With Best Compatibility100% Compatible with Ryobi 4V li-ion power tools, TEK4, AP4001 AP4302 AP4700 CSD42l RGS410 RLP416 RP4020 RP4300 RP4400 RP4520 RP4530 RP490.
With Higher Safety & Longer RuntimePrevents overcurrent, overheating, overcharging and short circuit without memory effect, prolongs battery life and allows you to charge and use safely.
FCC, RoHS and CE Certified100% compatible with the originals. Please feel free to use it!
Offer Professional ServiceSupport 1 year warranty and replacement service. If any problem occurs while using the product, please contact us by email, we will give you a satisfactory reply within 24 hours.

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8.8

Exmate

Exmate 4V 2.5Ah Battery Compatible with Ryobi TEK4 AP4001 AP4302 AP4700 CSD42l RP4020 RP4300 RP4400 RP4520 RP4530 RP490 Lithium-Ion Rechargeable Battery

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Main Highlights

Battery Type: Li-ion | Voltage: 4V | Capacity: 2500mAh
Perfectly compatible with Ryobi cordless power tools battery Ap4001, Tek4, Rp4900, Rp4410, Rp4400, Hp53lk, Ap4700, Rp4530, RP4030, RP4050.
High capacity Replace battery has 40% more run-time than standard batteries
Made of lead-free SMT process, fit with the requirements of environmental protection.
12 months limited Warranty and 24 hours' friendly customer service! Any issues please feel free to contact us.

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8.6

Casil

Casil 6V 4Ah Rechargeable Sealed Lead Acid Replacement Battery (2 Pack)

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Main Highlights

CA640 SLA is a 6V 4AH Sealed Lead Acid (SLA) rechargeable maintenance free battery.
Dimensions: 2.76 inches x 1.85 inches x 3.94 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.

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8.3

ExpertPower

ExpertPower 4V 2.0Ah Lithium-Ion Battery for Milwaukee 48-11-2001 M-4 Work with M4, 2101-20, 4932430098, 45242298150

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Main Highlights

Brand New | Li-ion | 4 Volts | 2000 mAh | Black
Compatible with Milwaukee 4-Volt M4 tools
Compact and light weight design as original OEM batteries; Li-ion battery is designed with no memory and virtually no self-discharge with long using life.
ExpertPower batteries are made with the highest quality materials and tested to match and/or exceed OEM specs.
Milwaukee 48-11-2001 M-4 Work with M4, 2101-20, 4932430098, 45242298150

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8.1

Shentec

Shentec 4V 4.0Ah Lithium-Ion Battery Compatible with Milwaukee 48-11-2001,M4,M-4,2101-20,4932430098, 45242298150

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Main Highlights

Voltage: 4V; Capacity: 4.0Ah; Type: Li-ion.
Compatible with Milwaukee 48-11-2001,M4,M-4,2101-20,4932430098, 45242298150
No memory effect and low self-discharge for maximum productivity and less downtime.
CE, FCC and RoHS certified, 100% compatible with the originals.
No memory effect and low self-discharge for maximum productivity and less downtime.

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8.1

Mighty Max Battery

Mighty Max Battery 4 Volt 4.5 Ah SLA Replacement Battery for Rima UN4.5-4 - 2 Pack

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Main Highlights

ML4.5-4 SLA is a 4V 4.5AH Sealed Lead Acid (SLA) rechargeable maintenance free battery, Pack of 2 - UL Certified
Dimensions: 1.89 inches x 1.89 inches x 4.25 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 and long service life.
Rechargeable battery that can be mounted in any position, resists shocks and vibration. Long lasting high performance in high and low temperatures
Full One Year Warranty

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Our Best Overall Choice

Best Choice

9.7

LivingSURE

LivingSURE Battery 20V 4Ah

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Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Reliable Power for Every Project: This 20V 4Ah cordless tool battery by LivingSURETM delivers consistent, dependable power to keep your tools performing at their best, so you can tackle DIY and home improvement tasks with confidence
Lightweight and Easy to Handle: Weighing just 1.25 lbs., this compact battery slides and locks into place quickly, allowing fast swaps that keep your workflow moving without interruptions
Quick Charging Convenience: Built-in indicator lights let you check charge levels at a glance, and the battery fully recharges in just 300 minutes when used with the LivingSURETM Battery Charger (sold separately)
Versatile Performance Upgrade: A smart choice for powering a range of LivingSURETM cordless tools, helping you stay prepared for everything from small fixes to bigger projects
LivingSURETM Quality You Can Trust: Designed for dependable performance and long-lasting use, this power tool battery makes a reliable addition to your tool collection;
WERE PROUDLY PART OF THE SILVER STAR BRANDS FAMILY: With a rich history of delivering quality & innovation, our trusted brands include Miles Kimball, Walter Drake, Easy Comforts, Exposures, Dream Products, Paula Young & Native Remedies. From creating distinctive outdoor Gaggleville décor to offering convenient do-it-yourself will kits, we specialize in providing unique solutions that enhance lives, homes, & well-being.Our commitment to excellence ensures premium products for every customer need
DISCOVER QUALITY AND TRUST ACROSS OUR FAMILY OF BRANDS: Holiday Peak simplifies your festive decorating, OakRidge brings quality home decor, Gaggleville adds charm with porch goose outfits, and LivingSURE completes this family with its functional products including power tools, pillows, ladders, stepstools, cleaning products and more.

Show Price

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