LiFePO4 Transmitter Packs

[Tom]

So, is anyone using these in their transmitters?

LiFePO4 Transmitter pack

My 11X battery at 600mah lasts about 30 minutes it seems.....

[pelle_gris]

I´m using a Hyperion LiFePO4 2100mAh pack in my Graupner MC22.
Duration on a charge is about 9 hours before the alarm goes off, and that´s with Weatronic 2,4 TX module, which uses quite a bit of power.

I can charge with 1,5Ah through the normal charge port, but if I´m in a hurry, I can remove the back of the TX, and charge the pack directly at up to 4,8Ah.

I´m very pleased with the change, even though the NiMh 3000 pack that came with the radio worked perfectly fine.

[pelle_gris]

I didn´t click your link before I typed the reply, but I see now, that it´s the exact same pack I use in my radio.

[klkaye]

I have seen plenty of posts on RCGroups from people who are happy with LiFe transmitter packs. Personally I think the 2000 mA Eneloops are a better choice. I believe there are some newer even higher capacity Eneloops available. There was a recent post by Charles (everydayflyer) showing a discharge test comparision of LiFe and Eneloop transmitter packs. The nickel batteries give a much more predictable drop off in voltage and your low voltage alarm should give you plenty of remaining time. In contrast, the LiFe's hold a very constant voltage until the end and then rapidly drop off. By the time your transmitter's low voltage alarm would sound you probably only have 5 minutes left.

[tkallev]

Jim Thomas uses a LiFePO4 pack in his JR12X without any issues. I will probably go that route when my current Ni chemistry 12X pack starts to degrade. I think the "steep dropoff" danger of the LiFePO4 packs is overrated.

tk

[dknippen]

I've heard good reports from other people and friends the 2000 Eneloops are a great choice. I'm about to order a pack
for my 12X.

[dknippen]

This should be their web site address
www.hangtimes.com
The Pack for the JR is the fourth one down under Transmitter Packs