Batteries for 1979 RD250F and 1981 RD350LC

[80sbiker]

Just sorting these bikes out either for use or selling and both need new batteries, doing the 250 first and the battery was dry so filled it and put it on charge.
I know it will need a new battery but thought i would give it a go anyway.
Looking on ebay there are acid filled and sealed ones, didn't know they still did the acid filled ones with cells, which should i buy, they are around £25 on ebay.
How do i know if the oil pump is still good after all these years before turning it over?

Also without looking is the 350LC battery the same? a 12N5.5?

[donkeychomp]

Motobatt. Never needs acid, light, can mount it sideways if you like (though that idea might be for a different forum).

Alex

[geoffb]

+1 for Motobatt 👍

[freddie19]

+2 for Motobatt. 👍

[4l04ever]

Motobatt are good, but don't let them go flat as they will not recover, so keep on a charger.