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Old Sep 02, 2014, 01:45 PM
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Help!
chargeing a 8s with a 6s charger

i have a Turnigy nano-tech 5000mah 8S 65~130C Lipo Pack that and need to charge it with a IMAW multi charger quattro B6
how can i do it thanks
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Old Sep 02, 2014, 11:44 PM
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Originally Posted by dpot View Post
i have a Turnigy nano-tech 5000mah 8S 65~130C Lipo Pack that and need to charge it with a IMAW multi charger quattro B6
how can i do it thanks
You can't. You need a charger that can output, at least, 34 volts.
For example look at the cell count:

http://www.hobbypartz.com/75p-1220-charger.html
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Old Sep 03, 2014, 02:13 AM
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The3 only way would be to tap into the balance lead connections and charge it as two 4s batteries (or a 3s and a 5s or a 3s and a 6s )

This wouldnt be particularly difficult but to be honest personally I'd just buy a new charger
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Old Sep 03, 2014, 03:37 AM
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Originally Posted by JetPlaneFlyer View Post
The3 only way would be to tap into the balance lead connections and charge it as two 4s batteries (or a 3s and a 5s or a 3s and a 6s )

This wouldnt be particularly difficult but to be honest personally I'd just buy a new charger
If you charge through the balance leads, aren't you limited to 3-4 amps?
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Old Sep 03, 2014, 04:19 AM
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Originally Posted by Rich in ILM View Post
If you charge through the balance leads, aren't you limited to 3-4 amps?
Yes. So for the OP's 8S 5000mah it would take between 2 and 3 hours, depending on the state of discharge.

I recommend an FMA (Revolectrix) PowerLab 8 for this job.
http://www.usastore.revolectrix.com/...-EC5-version_2

Glen
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Old Sep 03, 2014, 06:02 AM
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The PowerLab 8 would be an excellent choice for charging 8s 5000mAh LiPos.
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Old Sep 03, 2014, 06:32 AM
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The PowerLab 8 would be an excellent choice for charging 8s 5000mAh LiPos.
$260.00 ?? Really?
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Old Sep 03, 2014, 06:59 AM
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Originally Posted by Rich in ILM View Post
If you charge through the balance leads, aren't you limited to 3-4 amps?
Yes, but his B6 (50W) is only capable of around 3A per channel when charging a 4s battery so exceeding the current rating of the wires shouldnt be a big issue.
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Old Sep 03, 2014, 07:04 AM
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Originally Posted by Rich in ILM View Post
$260.00 ?? Really?
It's an excellent choice 'if' you have deep enough pockets, not everyone does.

having said that the OP should really have considered the cost of a suitable charger before he went down the route of 5000mAh, 8s power systems. Probably too late now but series connecting two 4s packs would have given more choice of reasonably priced chargers.
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Old Sep 03, 2014, 07:06 AM
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Originally Posted by Rich in ILM View Post
$260.00 ?? Really?
Yes really. The PowerLab8 is the best for the job. An iCharger 1010b or 208b would also work for less money but at a substantial reduction in power. The 1010b can not even hit 2C rate and the 208b can barely hit 2C rate.

All of the inexpensive 8s capable chargers won't even hit 1C on that battery. A high power charger is a worth while investment for batteries that size. When you are talking $100+ per battery it is more economical to have fewer batteries and recharge them more often and faster then to have more batteries and charge them slower.

An Accucel-8 is going to cost $45 and not even hit 1C on one battery. A PowerLab8 costs $260 and can parallel charge 8 of those batteries at once at 1C. So lets do the math... $45x8 = $360 and you're still charging slower then the PowerLab8 for more money.
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Old Sep 03, 2014, 07:16 AM
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http://www.hobbypartz.com/75p-1220-charger.html
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Old Sep 03, 2014, 07:23 AM
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Originally Posted by Rich in ILM View Post
$260.00 ?? Really?
Yes. IMHO the PowerLab 8 is a reliable cost effective solution for charging the 8s 5000mAh LiPo(s) the OP is using. Additionally, according to the manufacturer, that particular LiPo has a maximum charge rate of 8C.
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Old Sep 03, 2014, 07:41 AM
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Originally Posted by Rich in ILM View Post
First the issue is that will NEVER be in stock because that's the way HobbyPartz works. Lots of products, no inventory.

If you are going to spend $100 spend a few $$$ more and get the iCharger 208b. It's slightly more power, smaller and higher quality. That's my 2cents at least. But as several others have also pointed out, the PowerLab8 is the best solution. Why spend a large sum of money on a plane and an 8S power setup only to cheap out on a charger which will then limit your enjoyment of the plane.
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Old Sep 03, 2014, 08:30 AM
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The PL8 costs less than just 2 of the batteries the OP wants to charge. That seems pretty cheap for something that won't crash. Also cheaper in watts/dollar than the alternative linked above.
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Last edited by Dave H.; Sep 03, 2014 at 08:51 AM.
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Old Sep 03, 2014, 08:41 AM
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If considering big buck options then it would be wrong to overelook the dual channel ichargers. the 308 Duo or 4010 duo would both be excellent for the job, better than the Powerlab in my opinion but others might disagree.

Also note that the OP is in France, so US based links wont be much use to him
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