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TX Battery Question - 5/28/2008 4:05:37 PM   
Flyboy76



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From: Go Riders Go!!!!!!!, CANADA
Status: offline 		Hi, i just upgraded my TX battery in my Optic 6 from a 600mah NiCad to a 2100mah NimH. Just wondering can i still use my Wall Charger that came with the Radio for charging it?

Geoff

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RE: TX Battery Question - 5/28/2008 4:36:59 PM   
BarracudaHockey



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From: Orange Park, FL, USA
Status: offline 		You can but you'll never reach a full charge. You want something like an Accucyle or Triton if you're going to start playing with larger batteries. A transmitter wall wart is 50 to 100mah output.

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RE: TX Battery Question - 5/28/2008 5:18:18 PM   
wswanepoel


 

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quote:

ORIGINAL: BarracudaHockey

You want something like an Accucyle or Triton if you're going to start playing with larger batteries. A transmitter wall wart is 50 to 100mah output.


I agree.

If you want someting cheaper, look at this:

http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=3824&Product_Name=JB_1100_Digital_Smart_Lipo/NiMH_Charger_w/_Repair&cda=36317

or

http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=5548&Product_Name=IMAX_B6_Charger/Discharger_1-6_Cells&cda=36317

Both will get you on your way.

< Message edited by wswanepoel -- 5/28/2008 8:27:58 PM >

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RE: TX Battery Question - 5/28/2008 8:11:02 PM   
Rodney



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Status: offline 		Yes you can, it is again a simple matter of physics, if you put more energy in than leaks out (self discharge) you will eventually reach full charge. If you have an ammeter just check to see how much current you are putting into the battery with your wall wart. If you then divide the battery capacity by that value and multiply by 1.6 you will have the approximate time it will take to fully charge the battery from a fully discharged state. Edited to add the following: if that current is more than 0.1C then the 1.6 multiplier may be to high a number but it should be close.

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RE: TX Battery Question - 5/28/2008 8:29:49 PM   
BarracudaHockey



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From: Orange Park, FL, USA
Status: offline 		Thats great in theory. In practice however I think you will find electrical losses and inefficency means you could put that on charge for a week and it would probably never reach full capacity.

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RE: TX Battery Question - 5/29/2008 2:45:41 AM   
guver


 

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Status: offline 		If the rate is slower than c/10 then the multiplier goes up as well. 100 ma should charge a 2100 mah battery in about 4 days.

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RE: TX Battery Question - 5/29/2008 2:51:14 AM   
Flying Geezer



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From: Bowling Green, KY, USA
Status: offline 		You can also dig a basement with a teaspoon!

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RE: TX Battery Question - 5/29/2008 2:58:02 AM   
guver


 

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Status: offline 		That would take longer than 4 days.

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RE: TX Battery Question - 5/29/2008 6:19:52 AM   
wswanepoel


 

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From: FintasKuwait, KUWAIT
Status: offline 		or cut the lawn with a nailclipper

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RE: TX Battery Question - 5/29/2008 6:09:41 PM   
Flyboy76



Posts: 446
Joined: 8/15/2005
From: Go Riders Go!!!!!!!, CANADA
Status: offline 		I have a Triton jr. that i can use. What setting would you reccomend for charging and discharging

Geoff

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RE: TX Battery Question - 5/29/2008 6:12:38 PM   
guver


 

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From: LaGrange, OH, USA
Status: offline 		If it's a newer version that can have the safety timer disabled then use 1/2 amp max for chargeing. Discharge is not recommended.

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RE: TX Battery Question - 5/30/2008 12:09:13 AM   
Flyboy76



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Status: offline 		so 500 mah max for charging. the safety timer can be disabled and just let it go?? does it stop when it is charged on it's own???

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RE: TX Battery Question - 5/30/2008 12:16:54 AM   
guver


 

Posts: 8975
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From: LaGrange, OH, USA
Status: offline 		Yes, it is an automatic "peak" charger that stops when the batts are full. Disable timer or set it to 4 hrs if possible because it would take 4 hrs to do the batts if they were dead.

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RE: TX Battery Question - 5/30/2008 12:30:09 AM   
rlmcnii


 

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From: Pocomoke City, MD, USA
Status: offline 		500ma should cook those new 2100 AAs to well-done in short order. High-capacity AA NiMH cells do not tolerate charge rates above C/10 too well. And, unless you are in some huge hurry, there is no reason to charge them at a greater rate.

NiMH need about three cycles of form-charging: 16 to 18 hours @C/10 followed by discharge @ C/5. This method will get your cells to the rated 2100 mAh capacity.

There is a real good tutorial about NiMH batteries at the Hangtimes Hobbies website. Also, read the note about high-capacity AA cells for Tx packs. It is some good information.

< Message edited by rlmcnii -- 5/30/2008 2:36:28 AM >

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RE: TX Battery Question - 5/30/2008 2:26:13 PM   
Flyboy76



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