A warm battery after charging is not unusual but a hot battery is probably bad news.
It could be the battery has reached the end of the road through advancing age and natural deterioration. The best sealed lead-acid batteries, if that is the type fitted, is rated to have the capability of about 500 charge/discharge cycles but this is subject to a lot of variables including the type and duration of charging and the temperatures reached, the ambient operating temperature and the applied loads.
It could be a faulty "intelligent" battery charger has run riot and overcharged the battery and caused it to overheat.
If the battery is of advancing age and living on borrowed time it would be as well to replace it but certainly the charging unit should also be checked and possibly replaced.
Answers & Comments
A warm battery after charging is not unusual but a hot battery is probably bad news.
It could be the battery has reached the end of the road through advancing age and natural deterioration. The best sealed lead-acid batteries, if that is the type fitted, is rated to have the capability of about 500 charge/discharge cycles but this is subject to a lot of variables including the type and duration of charging and the temperatures reached, the ambient operating temperature and the applied loads.
It could be a faulty "intelligent" battery charger has run riot and overcharged the battery and caused it to overheat.
If the battery is of advancing age and living on borrowed time it would be as well to replace it but certainly the charging unit should also be checked and possibly replaced.