i am using 100 amp lead acid battery since last 1 year for domestic use now after 1 year i have problem that few cells of my battery gets overheated while charging and discharging heating occurs only at charging and discharging and only with two middle cells other cells has normal temperature,other cells has as room temp(20-30) and middle two cells has upto 50 celcious , i am shaking battery every day and i filled distilled water up to upper level while it was in lower lever 1 month ago ,After this problem i am not being able to use enough the storage capacity has come almost 40% less.in my country load shedding runs for one third period of per day .please suggest me if there is any solution.