I cannot plan my field trips ahead any more so I have a self containd box with battery, meters and a Sirius charger. Well first I have a couple of reasons to use the Sirius Peak charger. Ordinarily however, if I want to cycle or charge the TX NiMh (or NiCads) at anything higher than 1A, I remove the batteries and charge externally where they are surrounded by air and resting on a heatsink of sorts so the generated heat (esp. Topping up seldom takes longer than 20 minutes. If under pressure of time, usually C5, C/3 or C/2. IME, apart from seldom being flattened to the extent that a 1C full capacity charge is necessitated timewise, I am conservative for all the obvious common sense reasons when charging via the TX charge port. Playing it safe (NiMh overcharge) or supply oversight.I am surprised though that the unit wasn't supplied with a wall wart capable of C/10 output for the TX battery. ![]() This is discernible in the DX7 case even at C/2 or C/3. ![]() So that said, I don't charge my 1500mAh NiMh at 1C when in the TX because of that and the fact that NiMh cells get notably hotter than NiCads when being fast or rapid charged. Worthy of mention, Danny has oftimes said here that 1.2A is JR's recommended maximimum charge rate via the TX charge port. This charger does have reverse polarity detection, though TMK it's never been tested on the JR TXs as Cap'n Crosscheck here tends to be kinda' extra careful about that sort of thing. For basis of comparison, I similarly charge my NiCADed X-388S ('97), XF631 ('04), MAX66ADT (XP-662) X3 ('06), Quattro ('05), venerable MAX44 ('96) all without issue via their TX charge ports at rates > C/10 using this charger. The zero peak delta sensitivity can also be adjusted. It charges without issue, and importantly for NiMh, will peak detect (uses zero delta V) and cut-off or fallback to trickle depending upon how the preference is set. The change-over will cost me less than a single idiot or interference driven shootdown.īecause of the 'conservative' charge rate of the set included charger, I regularly charge my DX7 TX NiMh via its charge port using an external charger (SJ Propo PlatinumEX) using a JR orientated polarity charge lead. Other than serving as buddy boxes or retention of my now synthesised module driven venerable X-388S for legacy compatibility purposes when required, I doubt I'll have any other PPM/PCM kit left in my hanger within 18 months time. Although just commencing the transition, adopting DSM2 has been the best move I've EVER made in RC. It is pocket sized and I use it immediately after every landing and before every takeoff to be sure that the battery state is what I think it is.įlame suit on.but take it easy.I am merely reporting what is what it is.I have a SPEkTRUM DX7, mode 2, heli, purchased locally from a dealer supplied by the authorised distributor in Australia.įirstly, thanks to Horizon for bringing us SPEkTRUM. ![]() This is a cell monitor that has saved me several times. So.I changed to LiPo and don't have any more problems or near-problems.īe sure to keep an eye on the cells with an EOS Sentry from R/C Dude. These batteries were never over-discharged.because if they were.they would be destroyed anyway. This was on 2 different chargers, 3 packs and happened several times. Several times these LiFe (3 packs) would recharge to much less than what was used from the battery. I mean that if I made 7 flights at a known average discharge rate per flight of 60mah.that would mean that I would expect the recharge to be about 420mah. Thank you all for your suggestions and comments.I used LiFe packs for a couple of years and they worked well.but after awhile they got flaky and were charging too quickly for the known per flight current usage. Definitely solved my problem, and for only a fraction of the cost that I thought it would be. and i must say that I am very impressed with these batteries. Sorry for the delay in responding, but I did finally get around to trying these LIFE packs mentioned in an earlier post
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