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11-24-2006 11:25 AM  11 years agoPost 1
hingus2000

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West Midlands UK Posts: 75069

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Hi

I will soon be getting a T-rex sa.

It comes with a 2100mah battery, which I intend to charge on my Hobbico Quick Field Charger Mk2.

The charger has knob to charge at different Amp ratings (1A max for lipo's, 2A's for everything else). Which is the optimum rate I should set it for charging the 2100mah batteries?

Also, I have read that a balancer is a must. However I am slightly unsure as to how they work. Do they go between the charger and the battery during charging? Or do they plug separately into the battery? Which ones are compatible with my charger? Any recommendations?

Thanks for any advice.

Tom

T-Rex SA, Anodized Head, Gy240, 3s TP 2100mah, Align 35A ESC, 430L Motor

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11-24-2006 12:09 PM  11 years agoPost 2
smity777

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California

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You can get a Thunder Power balancer. Balance your lipos occationally.

If you get Thunderpowers Charger 1010, and their 10 Cell Balancer, you can charge your lipos in 15 minutes keeping the unit is series.

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11-24-2006 10:14 PM  11 years agoPost 3
Micro-Maniac

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Pasco,Washington Formerly: Captain Chaos

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I recommend this CellPro charger - It charges and balances at the same time - I believe it both charges and discharges individual cells when balancing unlike the TP balancers that only bleed the higher voltage cell(s) - It has a ton of features and is smart and fast and only a $60 price tag -

http://www.fmadirect.com/Detail.htm?item=2116§ion=45

A 2100mah pack can be charged at 1A but it will take a long time - It would have to be charged at 2A to be charged around an hour - 1A would be around 2 hour charges - I have the MKII and it takes about 1.5 hours to charge my 1320mah packs at 1A and using a TP balancer.

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11-25-2006 10:56 AM  11 years agoPost 4
hingus2000

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The MK2 only lets you charge at a max of 1A for lipos.

IF for example Im finished flying for the day, is it beneficial to charge the batteries at the lowest (hence slowest) setting?

Tom

T-Rex SA, Anodized Head, Gy240, 3s TP 2100mah, Align 35A ESC, 430L Motor

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11-25-2006 02:58 PM  11 years agoPost 5
Micro-Maniac

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Pasco,Washington Formerly: Captain Chaos

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It's probably healthier for the batteries to charge 'em slow at like 0.5C (1A for 2000mah packs).

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11-25-2006 08:01 PM  11 years agoPost 6
hingus2000

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West Midlands UK Posts: 75069

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It's probably healthier for the batteries to charge 'em slow at like 0.5C (1A for 2000mah packs).
Well thats as fast as the Mk2 lets you charge Lipo's (1A) so thats fine.

What about charging them very slowly at 0.2A (0.1C)? If for example I have finished flying for the night, will charging them very slowly at night be beneficial or have no real benefits?

Tom

T-Rex SA, Anodized Head, Gy240, 3s TP 2100mah, Align 35A ESC, 430L Motor

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11-25-2006 08:11 PM  11 years agoPost 7
Micro-Maniac

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Pasco,Washington Formerly: Captain Chaos

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I don't think there would be any benefit to charging that slowly - And I think it's really best to charge them in a time frame that you can keep a close eye on 'em for safety - Don't wanna burn your house down in your sleep.

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11-25-2006 08:22 PM  11 years agoPost 8
smcbmw

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Louisville, Kentucky

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If you dont have a balancer, I was told that charging them slowly will help keep the cells somewhat balanced but I dont know this to be a fact. It's worth the money($50) for a Thunder power balancer. Especially when your talking $80 for single Thunder power battery for the trex. If you don't see yourself getting out of the hobby anytime soon... Get the balancer..

10-8

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11-25-2006 08:24 PM  11 years agoPost 9
Micro-Maniac

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Pasco,Washington Formerly: Captain Chaos

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The balance charger I linked to is the same price as just a TP balancer so that's really much better value IMO - Theres even a version that will work with the new A123 packs as well.

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