1.58 kg

Battery Type: Li-ion, Voltage:18V, Capacity: 2500mAh each, 2 Packs in package. Come with a repacement P117 charger, performance is the same as original chargers.
Compatible with Ryobi p102, p103, p104, p105, p107, p108, p109 and fit all Ryobi 18v one+ system cordless tools
No memory effect. Can be charged or discharged as needed without loss of capacity