You can examine this video for a much more thorough procedure on how this is done. Observe the storage temperature level when measuring the open circuit voltage. A trendy Epsom salt vs vinegar battery repair (users.atw.hu) lowers the voltage a little and a warm one increases it. Utilizing OCV to approximate state-of-charge works best when the battery has actually rested for a couple of hours, due to the fact that a fee or discharge perturbs the battery and distorts the voltage. The cost of batteries remains to increase quickly. The average price of lithium and lead acid range from $17k-$ 20k.