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Old 06-11-2019, 05:55 PM   #1
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Default How to discharge LiPo for storage

Sorry, I searched and read so much my head is spinning...

My LiPo battery charger does not discharge, it only charges. So how does or what does a newbie do or buy or whatever to discharge his battery (easily) for storage? Battery is 5200 mAh 2S 50c 7.4v
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Old 06-11-2019, 06:10 PM   #2
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Default Re: How to discharge LiPo for storage

Is there a storage setting? If i run mine close to storage voltage, i just run a storage charge on it. Wat charger do u have? Thatd would help us to help u

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Old 06-12-2019, 02:20 AM   #3
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Default Re: How to discharge LiPo for storage

Simple answer buy a charger that has storage functions. Nothing else is convenient.

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Old 06-12-2019, 02:32 AM   #4
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Default Re: How to discharge LiPo for storage

Put it in your truck and drive it until it is at the voltage you want to store it at?
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Old 06-12-2019, 04:19 AM   #5
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Default Re: How to discharge LiPo for storage

Charger is a simple Dynamite Prophet Sport Mini - no discharge function.

Maybe something like: Targerthobby 3 IN1 50W Discharger Voltage Tester Balancer For Lipo Battery https://www.amazon.com/dp/B01ET162I4..._JfnaDbHQK0DH8
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Old 06-12-2019, 06:05 AM   #6
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Default Re: How to discharge LiPo for storage

I have one of these ISDT dischargers.

https://www.amainhobbies.com/isdt-fd...fd-100/p700374

Pretty much every charger these days has an incredibly weak discharge function, 1-2 amps at most. This take forever if you have high capacity packs. The ISDT discharger can do 2-3 cell packs at 6 amps so it is much quicker but not so high that it is going to throw off the balance of the pack too much if there is a weak cell. The voltage cutoff is adjustable with an optional PC link but out of the box, it brings the packs down to storage charge level.
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Old 06-12-2019, 11:53 AM   #7
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Default Re: How to discharge LiPo for storage

Yes, best to just run it down then if you don't have a charger capable, or if you don't want to purchase something new
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Old 06-13-2019, 01:57 PM   #8
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Default Re: How to discharge LiPo for storage

Quote:
Originally Posted by Brett_Boschert View Post
Yes, best to just run it down then if you don't have a charger capable, or if you don't want to purchase something new
The problem with just running it down is you don't know the voltage or whether or not it is balanced. Not a great way to store lipo batteries.

Those battery balancers that don't charge can take a long time to balance the battery, and what if the voltage is off.

For twice the cost you can get a skyrc b6 mini that will do everything you need and more. Only thing it won't do is check IR.

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Last edited by Voodoobrew; 06-13-2019 at 02:02 PM.
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Old 06-13-2019, 02:47 PM   #9
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Default Re: How to discharge LiPo for storage

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Originally Posted by Voodoobrew View Post
The problem with just running it down is you don't know the voltage or whether or not it is balanced. Not a great way to store lipo batteries.

Those battery balancers that don't charge can take a long time to balance the battery, and what if the voltage is off.

For twice the cost you can get a skyrc b6 mini that will do everything you need and more. Only thing it won't do is check IR.

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I have a venom 3 charger so I'm good. I was just saying without spending any money, but we probably bad advice, my apologies


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Old 06-13-2019, 03:05 PM   #10
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Default Re: How to discharge LiPo for storage

Ive got 2 hitec 1x chargers n they do everything. U can usually find them pretty reasonable on ebay. I got mine for bout 10 bucks a piece in auctions. I think theyre bout 30-40 outright

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Old 06-15-2019, 07:05 PM   #11
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Default Re: How to discharge LiPo for storage

Quote:
Originally Posted by Voodoobrew View Post
you can get a skyrc b6 mini that will do everything you need and more. Only thing it won't do is check IR.
OK, so I see this guy...

https://www.ebay.com/itm/Genuine-SKY...oAAOSwN3NcP-pW

and it's quite affordable, but how long (guestimate) does it take to discharge (to storage) a fully charged 5200 mAh 2S 50c 7.4v battery at a max of 2 amps?
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Old 06-15-2019, 10:28 PM   #12
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Default Re: How to discharge LiPo for storage

Bout an hour, maybe hour and a half. But also less chance of it heating up as well, so safer. I run it on the desk next to my computer. Easy to spend that much time there.

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Last edited by Voodoobrew; 06-15-2019 at 10:30 PM.
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Old 06-16-2019, 03:51 AM   #13
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Default Re: How to discharge LiPo for storage

Quote:
Originally Posted by vf750rider View Post
OK, so I see this guy...

https://www.ebay.com/itm/Genuine-SKY...oAAOSwN3NcP-pW

and it's quite affordable, but how long (guestimate) does it take to discharge (to storage) a fully charged 5200 mAh 2S 50c 7.4v battery at a max of 2 amps?
Those chargers are known to have dodgy components on occasion. I'd be inclined to get a Turnigy Accucell 6 directly from Hobbyking instead. The Turnigy is not infallible either but has a far better track record, especially when you're trusting to do something potentially dangerous (dealing with lipos).

Storage charge is about 40-50% charged. So assuming that 60% of the charge has to be removed from a fully charged 5.2Ah battery at a rate of 2Amps:
Discharge time = 0.60*5.2/2 = 1.56hours
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Old 06-18-2019, 03:12 PM   #14
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Default Re: How to discharge LiPo for storage

onboard Volt Meters are cheap.


same with a digital charger.
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