One Chinese operator tested the online battery and got the result that the best battery is rechargeable within only 100 times, the worst can be 20-30 times or even 1o times only( 1200 times is demanded in biding document)

If power cut once a day, most batteries only have service life of less than a year.

Representative imported battery GNB( sprinter) also show varying degrees of leakage and tympanites.

Representative homebred products also show varying degrees of leakage and early capacity failure.