One of the most typical issues with laptop batteries is overheating. Not the batteries are designed poorly or incorrectly but due to, in most situations, user wear. While laptop is using the AC adapter for power the battery acts as a back up in the event of a loss of power or random unplugging. In this AC power use the battery becomes warmer than it might if being used independently. To reduce the probabilities of this overheating, which leads to a shorter survival expectation of the battery, keep the AC power adapter plugged in only if you want to charge the battery while using the machine.
If the battery is regularly hot to touch, remove it and permit it to cool down first ensuring it is close to room temperature before reinserting it. If the battery continue to overheat or get too hot it'll potentially must be replaced. Always replace a defective battery promptly as it may cause irreparable damage caused to the laptop in question. As well as overheating failure to charge is another terribly common issue with laptop batteries.
First check to verify if the AC adapter is safely wired into the device; the tightness of the link will alter form laptop to laptop nonetheless it should be fixed in position well. To test for a good connection look out for the battery charging LED if you're present on your laptop. If it isn't on shake the rope to work out if the connection makes and breaks contact. If you see a flickering LED light and then the solution is a new adapter which is way better than wanted to purchase a new battery or a new DC power jack which can often be fixed by a typical user with a little instruction and help.