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9 minutes ago, Duncan said:

Bulk charging can be a high voltage but I would have though 14.x not 15.x

What battery type?

NS40Z SMF. The manual does show equalising voltage, not sure what it means though if it goes up there temporarily?image.thumb.png.a3e077732e498067ee4f91035d11bb3b.png

EDIT: I found some more information here, I might have jumped the gun a bit quick, but still need to make sure I'm not overcharging image.thumb.png.b6b681fcd6722b351c95da4e9c835ad3.png

Edited by silviaz
  • Like 1
1 hour ago, Duncan said:

Bulk charging can be a high voltage but I would have though 14.x not 15.x

What battery type?

Welp don't know if this is good but I can hear a sizzling sound in my battery Hope I didn't fry it. Turns out a bad battery in the multi meter will give a false reading (likely what happened when I said I had 15x volts), swapped the battery and monitoring now. I'm hoping that sizzling sound is just the equlisation charging

Edited by silviaz
57 minutes ago, Duncan said:

keep an extinguisher nearby? or even better, take it out of the car to charge?

Yeah I'm keeping an eye on it and might take it out as a once off if this doesn't fully charge. I did some research that said it's normal in equalisation charging. Voltage I thought was 20+ (faulty battery in multimeter) but now its on 15.9v, the max it should go to is 16.2v as per the manual.

I'll provide an update once hopefully it's actually fully charged and in float mode. Waiting for it to go to 16.2v and not higher and see what happens.

What I suspect has happened is that even though it's not an old battery, I did leave the car turned off for almost 4 weeks at one point then left it off for another 2 weeks which might have erroded the battery and is taking a long time to do this equlisation charge.

7 hours ago, silviaz said:

Good news. So it went up to 16.2 volts as per the manual then dropped to 13.6v where it maintains that voltage. The sizzling sound stopped after that. All is looking ok.

Car starts up same as usual.

There might have been some "hard core" decalcification going on in the cells to create that noise

As for chargers, I stick all our cars on a trickle charger every few months to "clean out their pipes/cells", the Mrs battery in her Mistsu ASX is still running its OEM from new battery 10 years on, and that thing does alot of short drives, and it can sit around for ages without a good long run

  • Like 1
37 minutes ago, The Bogan said:

There might have been some "hard core" decalcification going on in the cells to create that noise

As for chargers, I stick all our cars on a trickle charger every few months to "clean out their pipes/cells", the Mrs battery in her Mistsu ASX is still running its OEM from new battery 10 years on, and that thing does alot of short drives, and it can sit around for ages without a good long run

Yeah, I think it was a combination of me leaving car off for 4 weeks at one point (was a fairly new battery then) + then leaving it off for 2 weeks + and the time it spent sitting at the auto store or the warehouse.

For the most part you had to put your ear to the battery to hear the sizziling but not always.

10 years is amazing battery life.

Edited by silviaz

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