This is a generic, equivalent one, 100% compatible. This 18V 3.0AH Replacement Li-ion battery is designed to compatible with Worx WG251s, WG255, WG540.

Specifications:
* Product Type: generic/equivalent
* Battery Voltage: 18V
* Battery Capacity: 3.0AH / 3.5AH
* Chemistry: Li-ion
* Condition: new, 1 Year Warranty!
* It is easy to use, convenient to carry with.
* No memory effect, Integrated microchip prevents overcharging & lengthens battery life.

Compatible Part Numbers:
WA3511, WA3512, WA3512.1, WA3523

Compatible with the following Worx Power Tools models:
For WORX WG251s, WG255, WG540

NOTE:
1.The battery must be FULLY charged before first use.
2. The battery is stored in a cool and dry place.
3. Do not Separation, extrusion, and impact.
4. Do not put battery into water and fire.
5. Keep away from children.