LiPo charging question

Jaeger_CDN · February 17th, 2017, 20:24

I've been running NiMH batteries for the most part since I started in Airsoft but got a Lipo battery in a bulk gear purchase and thought I'd maybe do the switch to LiPo. The battery was still sealed in the box and has a sticker with battery checked date of 18/5/2015. The battery is a Turnigy nano-tech 7.4V 1300mah. There doesn't seem to be any swelling on the body of the battery. I had the small tami connector switched out to a deans by my gun tech.

I tried charging the battery with an Imax B6AC charger and as soon as I plug the balance charging plug in I get an error message of 'EXT. Temp TOO HI'. I have the charging unit set for Lipo balance charging 2.0A 7.4V (2S)

Just wondering if there is something wrong with the battery or have I not setting the charger up properly?

cetane · February 17th, 2017, 20:36

Do you have an external temp probe for your charger?

lurkingknight · February 17th, 2017, 20:55

can you charge your nimh pack with that charger? Have you read the manual on the charger? I think you can change the temperature cutoff values, so they could be incorrectly set.

ThunderCactus · February 17th, 2017, 21:43

There's a setting for temperature cutoff, although it should be valid for both lipo and nimh.
Make sure you're also plugging in the balance lead, using "balance charge", charging at 1C for safety (1.3A), selecting 2C for the charge mode, and the charger verifies that it's a 2C battery.

Styrak · February 17th, 2017, 23:20

ThunderCactus means 2S (7.4V)

ThunderCactus · February 18th, 2017, 00:02

2S

Amos · February 18th, 2017, 22:39

Try charging at 2S, 1.3A on "BALANCE CHARGE" mode. Plug the Deans in, plug the little white connector in.

Jaeger_CDN · February 18th, 2017, 23:49

I reset the charger back to factory settings so I'll give it a shot maybe tomorrow, I have company over at the moment.

Jaeger_CDN · February 20th, 2017, 17:07

Alright, got rid of my company now

I tried all your suggestions and came up with the same error message. I tried plugging the battery in a new balance charger system and got a different error message telling me that there is a short on the charger output.

I have charged NiMH batteries with the unit with no issues

I'm strongly suspecting that the battery itself is the problem

Jaeger_CDN · February 27th, 2017, 19:33

I picked up a voltage checker and the battery doesn't even register a charge at all and from what I found online, bringing a dead battery to life is a bit of a risky operation so I'll take it down to the battery recyclers for final disposal then.

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February 17th, 2017, 20:24	#1
Jaeger_CDN Trader rating Join Date: Jul 2015 Location: Alberta	LiPo charging question I've been running NiMH batteries for the most part since I started in Airsoft but got a Lipo battery in a bulk gear purchase and thought I'd maybe do the switch to LiPo. The battery was still sealed in the box and has a sticker with battery checked date of 18/5/2015. The battery is a Turnigy nano-tech 7.4V 1300mah. There doesn't seem to be any swelling on the body of the battery. I had the small tami connector switched out to a deans by my gun tech. I tried charging the battery with an Imax B6AC charger and as soon as I plug the balance charging plug in I get an error message of 'EXT. Temp TOO HI'. I have the charging unit set for Lipo balance charging 2.0A 7.4V (2S) Just wondering if there is something wrong with the battery or have I not setting the charger up properly?

February 17th, 2017, 20:36	#2
cetane Trader rating Join Date: Jun 2010 Location: Markham & Stouffville - Ontario - Canada	Do you have an external temp probe for your charger? __________________ Looking to get age verified in York region? Click link...

February 17th, 2017, 20:55	#3
lurkingknight "bb bukakke" KING! Trader rating Join Date: Jul 2011 Location: Ottawa	can you charge your nimh pack with that charger? Have you read the manual on the charger? I think you can change the temperature cutoff values, so they could be incorrectly set. __________________ I futz with V2s, V3s and V6s. I could be wrong... but probably, most likely not, as far as I know.

February 17th, 2017, 21:43	#4
ThunderCactus Not Eye Safe, Pretty Boy Maximus on the field take his picture! Trader rating Join Date: Feb 2007	There's a setting for temperature cutoff, although it should be valid for both lipo and nimh. Make sure you're also plugging in the balance lead, using "balance charge", charging at 1C for safety (1.3A), selecting 2C for the charge mode, and the charger verifies that it's a 2C battery.

February 17th, 2017, 23:20	#5
Styrak Trader rating Join Date: Jan 2007 Location: Saskatoon, SK	ThunderCactus means 2S (7.4V) __________________ Airsoft Sales and Repair/Upgrade Services

February 18th, 2017, 00:02	#6
ThunderCactus Not Eye Safe, Pretty Boy Maximus on the field take his picture! Trader rating Join Date: Feb 2007	2S

February 18th, 2017, 22:39	#7
Amos Trader rating Join Date: Aug 2006 Location: Japan	Try charging at 2S, 1.3A on "BALANCE CHARGE" mode. Plug the Deans in, plug the little white connector in. __________________ Custom Builds: FA3674U Krinkov G3SD6

February 18th, 2017, 23:49	#8
Jaeger_CDN Trader rating Join Date: Jul 2015 Location: Alberta	I reset the charger back to factory settings so I'll give it a shot maybe tomorrow, I have company over at the moment.

February 20th, 2017, 17:07	#9
Jaeger_CDN Trader rating Join Date: Jul 2015 Location: Alberta	Alright, got rid of my company now I tried all your suggestions and came up with the same error message. I tried plugging the battery in a new balance charger system and got a different error message telling me that there is a short on the charger output. I have charged NiMH batteries with the unit with no issues I'm strongly suspecting that the battery itself is the problem

February 27th, 2017, 19:33	#10
Jaeger_CDN Trader rating Join Date: Jul 2015 Location: Alberta	I picked up a voltage checker and the battery doesn't even register a charge at all and from what I found online, bringing a dead battery to life is a bit of a risky operation so I'll take it down to the battery recyclers for final disposal then.

LiPo charging question

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