Replacement Power Tool Battery 21V 4.0Ah Lithium Ion Rechargeable Replacement Ba

--Large Capacity ---- Brand New | Battery Type: Li-ion | Voltage: 21V | Capacity: 4000mAh. This 21-Volt MAX Lithium battery offers Longer Runtime and Improved Performance than other batteries, ideal for making 21V brushless chainsaw cordless 12 inches electric hand chainsaw battery powered chain saw that can be used for long periods of time.\n--Compatible ---- REPLACEMENT BATTERY is ideal for extending your cutting time and is suitable for 21V 12-inch cordless electric chainsaws, cordless hand chain saws, and battery-powered chainsaws.\n--Charge Stable --- 4.0Ah lithium ion battery pack features on overcurrent protection, short circuit protection, over-discharge protection, low voltage protection, time-limited protection, and overcharge protection! Easy to install and use.\n--Battery Storage ---- Store it in a clean, dry, cool place and keep the battery away from heat, water and metal cuttings. Please separate the battery from your power tool if you are planning not to use the batter.