Product details:
Condition: Brand new
Battery Voltage: 40V
Capacity: 4000mAh
Wattage: 160Wh

Compatible with Ryobi 40V Li-ion Battery Part #
OP4050A, OP4040A, OP4015,
OP4026, OP40201, OP40261, OP4030, OP40301
OP4040, OP40401, OP4050, OP40501, OP40601, OP40602

Compatible with Ryobi 40V Li-ion Tools Part #
RY40180, RY40200, RY40201A, RY40202, RY40204,
RY40250, RY40400, RY40402A/ R40402, RY40403, RY40403A, RY40411,
RY40430, RY40502A, RY40511, RY40530, RY40460, RY40601A (and so on)

Compatible with Ryobi 40V Li-ion Charger Part # OP400, OP401, OP403, OP403A and ZROP401

Battery tips:
When battery is not in use, keep battery pack dry, clean, and free from oil and grease.
Remove the battery pack from the charger once it is fully charged and ready for use.
If the tool stops during use, release the trigger to reset and resume operation. If the tool still does not work, the battery needs to be recharged.
Do not disassemble battery and attempt to replace the battery.