<b>Replacement PN#:</b><br> Replacement for Ryobi OP4026 OP4050A OP4015 OP40201 OP40261 OP4030 OP40301 OP4040 OP40401 OP4050 OP40501 OP40601 OP40602 OP4060A 40 Volt Lithium-ion Battery<br><br> <b>Compatible with: (NOT fit for RY40503)</b><br> Compatible with Ryobi 40V RY40180 RY40200 RY40201A RY40202 RY40204 RY40250 RY40400 RY40402A R40402 RY40403 RY40403A RY40411 RY40430 RY40502A RY40511 RY40530 RY40460 RY40601A Cordless Power Tools<br><br> <b>Compatible with</b> Ryobi OP400 OP400A OP401 OP403 OP403A and ZROP401 40V lithium-ion battery chargers<br><br> <b>Battery Maintain:</b><br> When battery is not in use, keep battery pack dry, clean, and free from oil and grease.<br> Remove the battery pack from the charger once it is fully charged and ready for use.<br> 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.<br> Do not disassemble battery and attempt to replace the battery.<br><br> <b>Package Include:</b><br> 1* OP40261 battery<br> 1* User Manual