Hi I Have done a search but cant find what I am looking for which is an inexpensive 12v battery tester. to test my hab battery and vehicle batteries a link to item be nice too thanks Paul
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Buy your batteries at Battery MegaStore, good price good service and so far I'm very pleased with the 3 x 100amp I have from them.
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A good post and good chart, but please do not repeat test/discharge your battery/batteries below 50% and never do it ebore 25% as this can damage them beyond use.A car battery tester is useless for testing a Leisure battery as they test the cranking performance which is a high load for a short period, A battery that is too knackered for leisure use will usually pass this test.
1) Best way of testing a leisure battery is to fully charge it, let it rest for an hour then & check the voltage:-
2) Place a load on it of say 5 amps (can do this in the van by turning on lights etc.).
3) Leave it with the load for a time that equates to 25% of battery capacity (100A/H battery it would be 5 amps for 5 hours).
4) Turn the load off let the battery settle for ½-1 hour measure the voltage, the battery will now be @ 75% state of charge.
5) Repeat 3, battery will now be @ 50% state of charge.
6) Repeat 3, battery will now be @ 25% state of charge.
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I have been reading info on http://www.aandncaravanservices.co.uk/ website regarding Reich Burstner set ups so thats confusing me more lol thanks for now Paul
I have read their info I did speak with him on the phone also I explained to him what my set up was and he told me I didnt have that set up lol. But on my van a 06 Burstner I have the vehicle battery of unknown size/power and for hab I have 2x 100ah connected to them I have an Zig X70 charger. This charger very rarely gets turned on as I also have 2x solar panels on roof of unknown power I do know one panel was an 80 watt upgrade from receipts. (The guy at a+n told me I havnt got a x70 charger at all lol)I think the Reich handbook recommends not exceeding about 250 amp/hour battery capacity including the vehicle battery for the standard ebox charger. I haven't got the info to hand, but my 05 Burstner has an additional charger fitted to the ebox that lets you exceed the 250 a/h. I fitted a 150 w solar panel last year and used the Reich solar controller, the guys at A&N kept me right as to how to wire it up and it works great, including trickle charging the cab battery and showing the solar input on the remote display. I've always found the Reich remote display volt and amp readings to be about the same as my multimeter readings, so assume that it's up to the job. The only time I've had battery problems was when one of the two leisure batteries started to fail and dragged the good one down with it, I disconnected the duff one and kept an eye on the good one for a couple of weeks then fitted a new lead acid of the same value and they've been fine.
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You should also never use a drop tester on a gel battery..
I really canna remember why ( got it in my notes somewhere but... )
It can ruin one in seconds
Totally agree and as I said in my post #15 useless for testing a leisure battery.The "voltage drop" test is a crude but effective method of destroying a perfectly good battery! The current drawn can cause the plates to heat and buckle, result - one dead battery.
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Peter, you are missing my point. If the battery is healthy WHY test it, however if it's knackered or assuming it's knackered ( good battery ) the drop test WILL damage it, 5 seconds is enough.A 5 seconds drop test isn't going to do anything to a healthy battery.
Peter
Peter, you are missing my point. If the battery is healthy WHY test it, however if it's knackered or assuming it's knackered ( good battery ) the drop test WILL damage it, 5 seconds is enough.
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