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› lithium ion question for tx
01-02-2011 06:26 PM  6 years agoPost 1
michael88997

rrElite Veteran

Lewisville,Tx

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ok so im gonna get some of those trustfire batteries and make a pack for my tx, i would like to use 4 of them and have 2 in parallel and then the other 2 plus the pair in series to make a 12.6v pack, i have a diode to cut 1.6 v down so only 11v goes into the tx... these batteries have overvolt and undervolt protection so they dont need to b balanced... my question is with 2 batteries in parallel connected to a series, would they all charge correctly and evenly?

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01-04-2011 01:24 AM  6 years agoPost 2
michael88997

rrElite Veteran

Lewisville,Tx

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to clarify i want to buy 2 sets of these (4 batteries)

http://www.dealextreme.com/details.dx/sku.20392

any problem with this?

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01-08-2011 11:27 PM  6 years agoPost 3
flying4fun

rrApprentice

Sunny SoCal

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First, diodes allow current flow in the direction of the arrow, typically radio manufacturers use them in the charging circuit for protection of the transmitter if you inadvertantly reverse conect the positive/negative. Diodes are not used to drop the voltage. I don't know why you want two cells in parllel, charging will be an issue due to having twice the capacity in the two cells in parallel. I know for a JR radio they do not recommend a 3 cell LiPo pack they said the voltage is too high and would damage the transmitter, or at least that is what they told (probaly officail reply) me so I went with an 8-cell 2100ma NiMh pack (cheapbatterypacks.com)

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01-09-2011 02:38 AM  6 years agoPost 4
michael88997

rrElite Veteran

Lewisville,Tx

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Well it's not a diode it's something that drops it 1.6 volts, but I just bought a lifepo4 pack so it's all good

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