12v LifePo4 battery( Lithium Iron Phosphate batteries 12v )
is a best idea to replacement to usual (LeadAcid,GEL) battery. It is much ealy to just replace it with New LiFePo4 battery.
Coremax 12v Lithium Iron Phosphate (LiFePO4) Battery is a state of the art 12V 50Ah battery. The battery is built with 4S LiFePo4 cells. with nominal voltage 12.8v.
Extreme performance (2000+ charge cycles, 5-10+ years service life, up to 90% capacity discharge)
ultimate reliability in the smallest form factor of its class. With serious applications in surveillance and scientific instrumentation in addition to being one of the most demanded Amateur Radio batteries, this battery can do it all. No EMI/RFI (Electromagnetic Interference/Radio-Frequency Interference) and is absolutely quiet.
Built-in BMS(protection circuit module)
which provides internal cell balancing and management, protection from over-current, under-voltage (over-discharge), overvoltage and short circuiting, and has integrated charging circuitry.