Author Topic: Optimate charger fail?  (Read 295 times)

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Offline Dusty ST

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Optimate charger fail?
on: 23 January, 2021, 03:38:15 PM
Anyone know what Optimate battery charger does when it fails?
I assumed when it's broken just going to be dead, but mine seems to be permanently in 'desulphate' mode rather than starting with 'charge' then switching to 'maintain' when it's plugged in.
Tried switching off/on, and swapping between bikes but makes no difference.
My Optimate's 20+ years old and been used 24/7, perhaps time for a new one, any recommendations?
17 Tiger Sport 1050
08 Sprint 1050ST
01 GSX1400 K2

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Offline Paul2bikes

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Re: Optimate charger fail?
Reply #1 on: 23 January, 2021, 04:12:49 PM
If it's lasted over 20 yrs, good idea get same again.

I have the accumate, same thing but does 6v anorl, it's well over 20 yrs old, still works fine, so owes me nowt.

I don't leave mine on, I swap it between 3 bikes it probably gets used 3 days in a fortnight or more.
Last Edit: 23 January, 2021, 04:15:13 PM by Paul2bikes
Also: '16 Tiger 800, '95 Yamaha Serow, '58 Ariel FH.

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Offline Dusty ST

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Re: Optimate charger fail?
Reply #2 on: 23 January, 2021, 04:33:12 PM
I Googled the desulphate mode and apparently it gives the battery 20V for a couple of hours, so I thought I'd better go disconnect before the battery boils as it's been like that for a couple of days.
So went to unplug the charger and found the mains plug had partially pulled out, not sure how as it's on an extension lead up in the roof of the garage above the bike, with plenty of slack.
Anyway pushed the mains plug properly home and alls well.
So, with the charger plugged into the bike but no power on the desulphate light comes on - which is odd  :084:
17 Tiger Sport 1050
08 Sprint 1050ST
01 GSX1400 K2

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Offline Paul2bikes

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Re: Optimate charger fail?
Reply #3 on: 23 January, 2021, 05:18:59 PM
Simple fixes are the best.
Also: '16 Tiger 800, '95 Yamaha Serow, '58 Ariel FH.

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Offline Paullie

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Re: Optimate charger fail?
Reply #4 on: 23 January, 2021, 06:13:46 PM
*Originally Posted by Dusty ST [+]
I Googled the desulphate mode and apparently it gives the battery 20V for a couple of hours, so I thought I'd better go disconnect before the battery boils as it's been like that for a couple of days.
So went to unplug the charger and found the mains plug had partially pulled out, not sure how as it's on an extension lead up in the roof of the garage above the bike, with plenty of slack.
Anyway pushed the mains plug properly home and alls well.
So, with the charger plugged into the bike but no power on the desulphate light comes on - which is odd  :084:
I think what happens is that indicator light draws power from the bike battery when there's no mains connected. My  CTEK does exactly the same. But if it's showing desulphate all the time, I would be a bit careful.

If you want to get a new one, buy a CTEK. They're expensive, but definitely the best. I prefer mine over the Optimate I used to have.

 



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