The same great Powerhouse LiFePo4 performance now with added in-built Bluetooth battery monitoring. Pair your battery with your phone and stay up to date with how your battery is charging and discharging as you use it. It offers live stats and historical data via an i - OS or Android based app. This 12V 300Ah lithium battery (LiFePO4 chemistry) is compatible in size with traditional 300Ah SLA batteries, but with all the benefits of cutting edge lithium technology. LiFePO4 batteries offer longer service life than traditional lead acid batteries, plus weigh less than HALF as much as SLA batteries. LiFePO4 also provide more usable life per cycle, allowing for longer run times by holding a higher voltage until capacity is almost exhausted. These batteries will also maintain 80-90% charge when in storage - far higher than their lead acid counterparts. The latest generation in maintenance free batteries is here! Each battery is fitted with an internal battery management system to provide safe charging and discharging at all times. This system provides internal short circuit, over temperature and under/over voltage cut off. Can be wired in series and/or parallel. When used in series each battery will need to be discharged to cut off before connecting so that all cells are all balanced. Factory supplied at 30% charge for safety compliance. Must be charged fully before use. Suitable for recharging with the mains battery charger models listed in the accessories below. Excessive temperatures over 65o - C can effect the ABS housing. Need to be well ventilated in warm conditions. Not for use in engine bays. IMPORTANT NOTE: A fixed installation of this battery in a recreational vehicle such as a caravan, camper or 4WD must adhere to Australian Standard AS/NZS 3001:2. A professional installer should be consulted when a fixed battery installation is required in a recreational vehicle. Internal battery management system for safe charging and discharging. Drop in replacement for standard lead acid 300Ah batteries Half the weight of traditional lead acid batteries. Less discharge when in storage compared with traditional lead acid batteries. Longer service life compared to lead acid. Longer run time compared to lead acid. What are LiFePO4 type batteries? About the Bluetooth monitoring App. - Play and Apple App stores at the links below: i - OS App Store Android Devices