I have purchase my Inva tubular battery on 30-April. Whose serial no.3N7-22030.
From 6 to 7 months i watch that after every 20-25 days, water battery gets end (empty) and the backup is also gets reduced.
Within 20 days, the water tanks gets empty... is not the normal condition of battery.
So you r kindly requested to please consider my problem.
Thanx...
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