Experience unrivalled long lasting battery power with Venom's range of high capacity rechargeable AA and AAA battery packs. Designed and engineered in the UK, Venom Battery Packs deliver superior charge disbursement that keeps your devices powered for longer between charges. Our Intelligent Charging Dock can charge up to 4 x AA or 4 x AAA rechargeable battery packs at a time. Simply insert your batteries and connect to any USB output or mains supply and power will be restored to your batteries in no time at all. High capacity rechargeable batteries offering 2100mAh (AA) and 800mAh (AAA) charge capacity. Fast recharge and can withstand in excess of 500 full recharges per each battery lifetime. Compatible with all universal AA and AAA wall socket chargers and charging docks. Available in multiple pack sizes to suit your requirements. Fast efficient charging for up to 4 x AA or 4 x AAA batteries at a time. Universal functionality, will charge all brands of rechargeable AA or AAA batteries. Includes USB charging cable to connect to any USB output or mains outlet.