What is the lifetime of the battery using it once monthly until it is discharged. Does is last for years? Thanks.

I've only had these batteries for about a year. They still work. During lawn care season I use them once or twice a month, they only last about 20-30 minutes, so go right on the charger after use.

Do you charge these before use?

I charge them only if they’ve sat for a while without use

Can you use the Worx charger to charge these batteries or new charger required?

If your charger belongs to Worx 20-volt lithium battery charger, then our this WA3525 lithium battery can compatible with it. (Lasica after-sales service: 90-day full refund and 12-month limited warranty. Please contact us on your order page for help.)

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Lasica Compatible with Worx Battery 20V 2-Pack 4.0Ah WA3525 Battery, Compatible with Worx 20volt Cordless Tools WG324 WG545.6 WG644 WG261 WG625 WG184 WG584 WG322 WG779

Product ID: 222133436

Details

Battery Capacity
4000
Battery Cell Composition
Lithium Ion
Brand
Lasica
Number of Batteries
2 Lithium Ion
Recommended Uses For Product
Compatible MAX

⚡20V Lithium-Ion Power

🔋4000mAh High Capacity

🛡️Advanced Safety Protections

Description

🔋 Double the power, zero compromises—stay charged, stay ahead!

SAFE SOUND - Built-in overcharge, overheating, and short-circuit protection for worry-free use.
DUAL PACK ADVANTAGE - Two batteries in one pack mean double the power and zero downtime.
POWER THROUGH YOUR DAY - 4000mAh capacity delivers extended runtime for uninterrupted productivity.
SEAMLESS COMPATIBILITY - Works flawlessly with a wide range of 20V Worx cordless tools—no tool left behind.
CERTIFIED QUALITY ASSURANCE - CE, FCC, and ROHS certified to meet and exceed OEM standards.

The Lasica 20V 4.0Ah Lithium-Ion Battery 2-Pack is a high-capacity, reliable replacement compatible with Worx 20V cordless tools. Featuring advanced safety protections and broad tool compatibility, these batteries ensure longer runtime and peace of mind for all your outdoor power needs.

Specifications

ASIN	B088FQVNQT
Amperage	4 A
Antenna Location	Compatible with 20-Volt MAX Cordless Power Tools
Battery Capacity	4000 milliamp_hours
Battery Cell Type	Lithium Ion
Battery Weight	680 g
Best Sellers Rank	#519,972 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #4,215 in Cordless Tool Battery Packs
Brand	Lasica
Customer Reviews	4.3 4.3 out of 5 stars (673)
Included Components	2 Pack 20V Lithium Ion Battery WA3525
Item Dimensions	3.4 x 7.5 x 5.2 inches
Item Weight	1.5 pounds
Manufacturer	WALEE
Model Name	Replacement for WA3525 WA3520 20v battery
Model Number	WA3525
Number of Batteries	2 Lithium Ion batteries required. (included)
Reusability	Rechargeable
Unit Count	2 Count
Voltage	20 volts
Warranty Description	90 Days Money Back and 1 Year Warranty!

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