1、COMPATIBLE MODELS: Compatible for 12V‑20V lithium batteries for LBXR20 LBXR20 OPE LB20 LBX20 LBX4020 LB2X4020. (NOTE: Does not work with NiCd and NiMH batteries and vacuum models.) 2、STABLE CHARGING PERFORMANCE: Delivers a stable output voltage of 10‑20V and a maximum power of 21W, ensuring fast and efficient charging for your lithium batteries. 3、CHARGER INDICATORS: The charger communicates battery charge status through LED indicators for diagnostics, which can prevent overcharging, overheating and overcurrent. 4、LONG BATTERY LIFE: The charger's maintenance mode automatically optimizes charging to extend battery life with a full charge in 7‑10 hours. 5、FAST CHARGING AND SAFE DESIGN: The replacement charger charges batteries quickly. Multi protection safety system guards your charger and battery in every way. Item Type: Vacuum Cleaner Charger Material: ABS Application: Compatible with 20V Maximum Lithium Battery for LBXR20 LBXR20 OPE LB20 LBX20 LBX4020 LB2X4020 1 x Charging Base 1 x Adapter