Is it a good idea to replace a built in lithium polymer battery rated:
3.7 V, 2000 mah with TWO x brand new
3.7 V, 1800 mah (much thinner stacking them together) connected in PARALLEL and place it in my mp3 player model (Colorfly C4)? As it turnes out the built in battery is of very poor quality hence the question.
- Is this perfectly safe to parallel charge two exactly same brand new lithium poly batteries, or will there be a danger of overheating/fire?
- Will the capacity truly then be 3600 mah then, meaning longer playbacks as well as longer charging times?
- What things should I take further into account (aside volume/packaging/fitting etc)