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Author Topic: Turnigy Accucel6 80w question  (Read 551 times)

SnoozeDoggyDog

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Turnigy Accucel6 80w question
« on: August 15, 2017, 08:27:27 PM »

Fellas
I've got one of these with a parralell charging board. Mainly it's for in the car so I can charge the odd pack of needed.

My question is am I right in thinking (in my case) it can only charge 1 4s 8000mah power at a time OR 2 3s 3000 mah at a time (and set the charge to 6s 6000mah?) I'm guessing the magic number is not to exceed the 10amp rating of the Accucel6?

Thanks
P
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Loopdreams

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Re: Turnigy Accucel6 80w question
« Reply #1 on: August 15, 2017, 10:16:42 PM »

If you're using a parallel charge board and charging 2 x 3s batteries then you still set it to 3s but just double the charge rate.
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Coyote

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Re: Turnigy Accucel6 80w question
« Reply #2 on: August 15, 2017, 10:21:20 PM »

The magic number is not the 10A but the 80 watt.

So with a 4s battery 4x 4.2v gives you 16.8v. 80 watts divided by 16.8v is 4.76 amps.

So an 8000mah 4s would take just under 2 hours. 
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SnoozeDoggyDog

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Re: Turnigy Accucel6 80w question
« Reply #3 on: August 15, 2017, 10:35:51 PM »

Oh bum 😟👎

Thanks Ian.
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SnoozeDoggyDog

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Re: Turnigy Accucel6 80w question
« Reply #4 on: August 16, 2017, 07:41:51 AM »

The magic number is not the 10A but the 80 watt.

So with a 4s battery 4x 4.2v gives you 16.8v. 80 watts divided by 16.8v is 4.76 amps.

So an 8000mah 4s would take just under 2 hours.
I've been having a think about this. Logically I'm not discharging to zero. I run my packs down to 14.5v (4s 8ah) which should be around 2.6ah. so I can deduct what's left in the pack from the overall charge time cant I? And I assume the same would apply for all lipo batteries if used correctly?

P
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Coyote

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Re: Turnigy Accucel6 80w question
« Reply #5 on: August 16, 2017, 08:39:56 AM »

Yes that's right.
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Loopdreams

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Re: Turnigy Accucel6 80w question
« Reply #6 on: August 16, 2017, 08:59:35 AM »

That's true but if you're trying to work out how long it will actually take bear in mind that the charge rate tails off massively as the packs start to get full.  I've sometimes wondered if it's even worth dribbling those last few milliamps into the battery or if it actually just shortens battery life for very little benefit.
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SnoozeDoggyDog

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Re: Turnigy Accucel6 80w question
« Reply #7 on: August 16, 2017, 09:12:34 AM »

That's true but if you're trying to work out how long it will actually take bear in mind that the charge rate tails off massively as the packs start to get full.  I've sometimes wondered if it's even worth dribbling those last few milliamps into the battery or if it actually just shortens battery life for very little benefit.
Hmmm fair point re the last few mah. Something to consider. Thank you.
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seebuyfly

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Re: Turnigy Accucel6 80w question
« Reply #8 on: August 16, 2017, 10:57:38 AM »

Sorry to jump in on this but I just bought one for my accucel and I was wondering if the balance lead needed to be connected between the charger and board? I have a bunch of 5s cells that I cut into 4s but this means that the end pin on the balance plug is unused and I can't put it into the 4s socket on the board.

I figured that since the respective cells were all connected to eachother on the board it wouldn't be a problem but maybe this isn't so.
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iwan_canobi

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Re: Turnigy Accucel6 80w question
« Reply #9 on: August 16, 2017, 11:29:44 AM »

You will need the cable between the board and the charger, but it shouldn't matter if you just use the 5S connection with the last cell unconnected. The charger will only be looking for 4 cells and as you say, they are all routed together on the board anyway. If there is a 5S connector that is.

Some chargers will let you just do a 'charge' rather than balance charge, in which case you might get away without the balance lead being connected but I'm not sure.
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elmattbo

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Turnigy Accucel6 80w question
« Reply #10 on: August 17, 2017, 06:20:35 AM »

Talking about in car charging.... something to watch out for is the power demand as coyote mentioned. With the engine off, the car battery voltage will drop as soon as you demand any power from it resulting in an increase in current to maintain the power the charger is demanding. With the engine running, you may be getting near 14V from the alternator, but it can drop to 11 with the engine off. With a 70W charge, that means a rise from 5A to 7.5A through the fag lighter. Possibly enough to blow a fuse somewhere.

Don't ask me how I know...


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