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Post by bodger on May 21, 2019 12:25:56 GMT
you shouldn't add water to concentrated acid because it may splash (bubble and squirt?) in your face . ... battery acid is quite diluted - no problems. there is summat seriously wrong with your arrangements if you can't remove the caps without taking the batteries out. you should be checking them at least monthly, speshully in the hot weather. My batteries are partly under the gunwales and need to be disconnected and pulled out to remove the caps, I imagine this is quite common in shorter trad stern boats. when I had a narrowboat I arranged for a plywood base supporting the battery tray - the whole thing could slide out so I could check the levels and top up.
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Post by ianali on May 21, 2019 13:03:15 GMT
Looks like somebody had a "narrow escape". Oh S... I’ve left my boat unattended.
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Post by Clinton Cool on May 21, 2019 13:03:27 GMT
My batteries are partially hidden. I can get the caps off but can't see the levels. Solution is to get some extra long matchsticks. Pull each cap off in turn then insert match so that it touches the top of the plate. If it comes back wet all is well. If not I flood the top of the battery with water until subsequent matchstick tests come back wet. Bit off a faff but less so than taking the batteries out.
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Post by ianali on May 21, 2019 13:10:20 GMT
I use one of those yellow bottle things that have a cut off valve built in. Push it in the hole and it stops when it’s filled to the correct level. Very clever.
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Post by Jim on May 21, 2019 15:45:39 GMT
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Post by naughtyfox on May 21, 2019 15:49:06 GMT
A syringe or a small funnel will do.
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