I just rebuilt a battery pack for my laptop. I took out the old Li ion batteries (which were 2600mah each) and replaced them with the same kind of battery (18650) except the new ones had 4000mah each. I kept the original circuit board, and did the same connections. I didn't have a millimeter though to test them (I know bad)I charged it overnight, it showed in the operating system that it was charging, and after 20 hours of charging, it said low vary after 20 min (where it used to die), but lasted 40 minutes after this for a total of 1 hour. What is going on?Laptop is msi gx630Thanks for your help, I'm clueless, is it from a weak solder joint?
your conclusion that the fault was with the original 2600mah batteries might be incorrect. I know it is quite likely but if it is incorrect, that would explain why batteries you believe are perfectly good are not retaining a charge. The supporting circuitry or perhaps even the motherboard bios could be the problem. The big question is: Are other owners of this model having the same problem? Search on the internet by typing gx630 batteries don't hold charge or something like that. Li Ion batteries sometimes need to be cycled several times to extend their charge time: charge all the way up, run down completely, 3, 4 times. Observe the results carefully to detect any change.,
