21V Lithium Battery Rechargeable Batteries for Electric Wrench Drill Saws Angle Grinder Power Tool

Features:
The housing is made of anti-fall, pressure-resistant, high temperature resistant, and fire-resistant material.
Adopts quality assembly technology, with stable working performance and fine durability.
Shock resistant metal contact pieces, multiple terminations reduce resistance and increase the stability of links.
Multiple protections design, overcharging, discharging, overloading, over voltage, over current, over temperature, short circuit are protected.
Adopts leadfree hot air reflow welding, the joints are beautiful and firm, not easy to fall off, and with remarkable shockproof effect.
Larger capacity, higher discharge rate, more powerful, can provide longer service time.
4 types optional, you can choose according to your demands easily.
With indicator light: LED indicator light allows you to monitor the remaining electric quantity of battery, and you can recharge the battery in time.