Masione P108 4.0ah Lithium Battery for Ryobi 18-Volt One Plus One+ Compact P102 P103 P104 P105 P107 P122 High Capacity Lithium Replacement Battery 4.0 AMP High Capacity 18 Volts Lithium Ion Rechargeable Battery Compatible with all Ryobi 18-Volt ONE+ tools Improves the performance of 18-Volt ONE+ tools up to 35% Fuel gauge displays remaining runtime for less downtime on the job Built in high quality battery cells,No effect on the battery,Charging at any time <span class="a-text-bold">LONGER RUNNING</span>: 4000mAh last longer than 2.5mAh, more juice than NI-CD battery,fade-free power,make your process completed perfectly,self-discharge is lower,quick charger,fully charged in as littlle as two hour <span class="a-text-bold">LED FUEL GAUGE</span>: Shows how much charge you have left in the battery with the button activated LED lighting system on the front <span class="a-text-bold">18V Compatible</span>: 100% Compatible with Ryobi P104 P105 P102 P103 P107 P108. Designed specifically for Ryobi tools 18v 4000mAh large capacity, longer run time High-grade cells resist self-discharge and remain ready for use Inbuilt with protection circuits to ensure battery safety Need a Ryobi 18v lithium charger, eg. Ryobi P117 Ryobi P118 Not compatible with Ryobi 18v radio, lamp eg. Ryobi P742 Ryobi P74