The battery discharge so fast even with a new battery

To see how quickly it loses juice. If.fast discharge..u need new. Hot weather wears a batt. They only last 3-5yrs. Buy a deepcycle marine battery for strenth n longlife

REMOVE THE BATTERY AND CHECK WHETHER THE BATTERY IS SWOLLEN IF SO CHANGE THE BATTERY

you can replace new battery for the moment and charging again. so if your mobile getting heat again may be short circuit on your mobile phone

If you still have the old battery see if it can be charged put it back on and try that. If the same thing happens it's not the battery.It's a new problem that happened when you put the new battery on. CK voltage on new battery, check battery fluid, leave battery on charger overnite, then try it. I had a battery that showed full charge then would discharge real fast. Replaced battery and now it works fine. Even a NEW battery can be bad.

Sounds like your alternator is not working. You can remove the alternator from the vehicle and take it to your local auto parts store to have it tested for free.

This is a very commen with Chinese stuff. The looks are perfect, but the quality is exactly otherwise. Sorry to hear of your prob. See if you can find a standard battery of a good brand with the same specifications. Its better to buy a good and expensive battery than go in for three low quality ones. Give it a thought.

Battery is probably at the end of its life or then there is a problem with the motherboard causeing it to consume greater amounts of power, only solution to that would be to replace the motherboard.

try with a difrent battery?

Sounds like your battery has had it mate - grab yourself a new generic, see if that fixes the problem, otherwise try a complete software reinstall