we are lifepo4 battery manufacturer we are in this battery business over 10 years we can do oed/ service support bt,rs485 etc.. function. lightweight. its weight is only one-third the weight of lead acid batteries.more stable and safer. the chemical of lifepo4 battery is very stable. so it's very safer than lead acid battery. this lithium iron phosphate batteries the superior high temperature and storage performance make lifepo4 the most suitable one for 12v li-ion battery positive material. solar batteries lifepo4 material battery is safe than licoo2 and limn2o4 for it's stable structure can be kept very well under continuous charging and discharging situations. we can customize any capacity battery and size you wantwe can produce all the batteries listed belowif you have requirments,please write to me,thank you.syi