dannymccann
Member
Registered: 9th Aug 06
Location: Doddington, Lincolnshire
User status: Offline
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Motorbike battery. Replaced my original Yuasa YTX9BS with the same manufacturer / model. It's a sealed type that comes with acid to fill it up to start with then you put the caps on to seal it forever. I've filled it up with no issues and tested it and it's reading 12.8V. It hasnt been in the bike yet (filled it up in the kitchen).
The instructions didnt say anything about trickle charging it before first use, but I thought I would stick it on the charger anyway. Connected up (postive and negative on the right terminals etc) but my charger doesn't seem to want to charge it? I've got old and new side by side, they are the same 0.9A (5-10hr) rating (4A Fast charge), my charger is a 1.5A one. The old one will accept a charge but the new one wont?
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Ian
Site Administrator
Registered: 28th Aug 99
Location: Liverpool
User status: Offline
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Try putting both of them in parallel to start the charge, then remove the old one once the charger recognises it.
I've got a charger that claims to be clever but it doesn't sense some batteries if they're particularly flat, just needs a load there to fool it to start, then you're away.
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dannymccann
Member
Registered: 9th Aug 06
Location: Doddington, Lincolnshire
User status: Offline
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How do I do that? I've only got 1 of each positive and negative leads for 4 terminals?
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Ian
Site Administrator
Registered: 28th Aug 99
Location: Liverpool
User status: Offline
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Charger to the new battery pos and neg
Pos old to pos new with a jump lead
Neg old to new new with a jump lead
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dannymccann
Member
Registered: 9th Aug 06
Location: Doddington, Lincolnshire
User status: Offline
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Ah OK, I'll get the jump leads in from the car boot tomorrow morning, cheers 
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Generation
Member
Registered: 7th Jul 09
Location: Essex
User status: Offline
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One of my batteries did this, clipping and unclipping charger leads in various places on around 10th time it would work
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dannymccann
Member
Registered: 9th Aug 06
Location: Doddington, Lincolnshire
User status: Offline
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It's my fault. I've been using my charger to maintain my old battery because after a weekend it was struggling to turn the starter and I was getting backfires turnover.
The LED charging status was being completely misread by myself. Turns out that old battery was well and truly fubared, reading fully charged at 12.2V and throwing up different lights  No wonder I was struggling to start every morning 
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DaveyLC
Member
Registered: 8th Oct 08
Location: Berkshire
User status: Offline
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Slightly OT but you know one thing I learned from owning a motor bike that was barely ever used?
Buy batteries from your local Halfords with a 5 year or more warranty, yeah it costs more but what you do then is when ever it shits its pants from lack of use take it back for another one 
They never seem to quibble if its within warranty.
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dannymccann
Member
Registered: 9th Aug 06
Location: Doddington, Lincolnshire
User status: Offline
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To be honest, having had a dicky battery for the last 2 years now I've gotten quite used to whipping the battery out for it's weekly weekend 'charge' - I know what killed it in the first place, I left it in over the winter stupidly. Two bolts and two screws and it pops straight out
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