Sounds like the contact points may be corroded or it could be just one contact where the battery ends actually touch a spring and there should also be another metal conact point if either of these are rusted they may just need cleaning or worst case replaced, doesn't matter what brand name you use they all can leak acid, when buying batteries make sure when you choose your batteries that both ends look solid and there is NO moisture of any kind. Hope this helps.
Answers & Comments
Sounds like the contact points may be corroded or it could be just one contact where the battery ends actually touch a spring and there should also be another metal conact point if either of these are rusted they may just need cleaning or worst case replaced, doesn't matter what brand name you use they all can leak acid, when buying batteries make sure when you choose your batteries that both ends look solid and there is NO moisture of any kind. Hope this helps.