Nicad VS NiMH and 2.4 - Page 3 - RCCanada - Canada Radio Controlled Hobby Forum
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Old 05-27-2010, 03:40 AM   #21
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Re: Nicad VS NiMH and 2.4

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The notchy reaction you got is the same I had when I had a low battery pack with the Hitec 2.4 receiver, even though it showed above 4.5 volts and with only standard servos. I have switched all flight packs to A123 2 cell packs 1100ma and won't go back, especially to nimh. Nimh unless eneloop or whatever will drop quite quickly while sitting around. A123's after the winter of sitting charged a whopping 40-50ma and were ready to go this Spring.
I used Black and Decker VPX packs for flight packs but now can't get them so I get A123 cells with tabs on EBAY (fake or not) for like $5 ea. and make up a flight pack with lead for about $11. Start out at 7+ volts and never get to 5 volts.
The packs are light. If a larger model I would use a pack for the SPC(RX driver) and a pack for the servos.

Last edited by ss40a; 05-27-2010 at 03:44 AM.
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Old 05-27-2010, 12:58 PM   #22
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Re: Nicad VS NiMH and 2.4

Regarding NiMH packs - some manufacturers now have High Drain or High Current versions of NiMH packs - these packs put out more current than typical NiMH packs and are better suited for use in larger airplanes.

We carry some of these packs - here's a link:

Also, it has been recommended on other forums that one should use at least a 5-cell Ni-Cad/NiMH pack with Hitec Optima receivers in larger planes (.90 size and up). The extra cell provides more of a voltage "cushion" to reduce the risk of a brownout.

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