All amiga.s that are using this type of battery should have it removed due to the age of the machines. Quite a few machines have died due to battery leakage ive seen a few that have been for sale with dead motherboards due to leakage lately.i have an a4000 motherboard coming bought from someone on amibench battery is not leaking but i will be removing it and replacing it .my a 4000 tower has a lithium battery and also some pins to connect a batery with a lead instead of mounting on the motherboard . :-)