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RE: Receiver batt question
[/quote] This is the only JR charger that will charge that pack for you fully. http://www.jrradios.com/Products/Tec...ProdID=JRPC223 From depleted to full would take about 16 hours, but most of the time you most likely would not need to do this other than the fist time so over night will do....unless you left your TX on. This ''wont do it all'' as it only charges the TX. It is also dumb, as it can not tell you state of charge. It is inexpensive. Other JR combo RX/TX chargers don't have current needed to fully charge that large of mah battery nor are they for NiMH (not including the JR 12X only NiMH system). With a good charge a 2600 NiMH TX pack will give you more flying time than most would care for before needing a charge. Just remember that NiMH self discharge quickly so a few days after a charge is too long, charge the night before and if you forgot, you'd wish you had a quick charger because now your out of time. [/quote] Is it a peak charger? I mean once the battery is charged fully is it gonna shut it off automatically or continue to charge the battery pack? |
RE: Receiver batt question
Most chargers continue to "slow charge", however this JR in question, mentions NiMH specifically and may have some sort drop down to maintenance/trickle. But for the cheap price, I'd doubt it. Ask JR support.
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RE: Receiver batt question
That charger is for an TRANSMITTER and uses a much higher voltage.
It is not suited for either a 4.8v or 6v RX pack. A 4.8v pack wall wart type charger WILL charge a 6v pack, but not to absolute capacity. However it does get fairly close. As mentioned it just takes longer. Most wall chargers only output either 50mA or 100mA which is a conservative "trickle" charge for any larger pack. I regularly charge 3800mAh 6v RX packs with a 50-100mA 4.8v charger. I just don't get a full 3800mAh out of the batteries... normally I get around 3600mAh when charged this way, and that's just fine with me. The s-l-o-w-w-w charge also assure the packs last much longer as it is very gentle on the chemicals. |
RE: Receiver batt question
For a .40 to .60 size, non 3D plane with standard servos, there is no reason to go to a larger capacity RX pack than a 600-750mAh nicad if you have a good charger and cycle your packs regularly. Buying a high cap pack and using a wallwart to charge it gains you nada.
Edit: Besides weight. |
RE: Receiver batt question
ORIGINAL: GaryHarris For a .40 to .60 size, non 3D plane with standard servos, there is no reason to go to a larger capacity RX pack than a 600-750mAh nicad if you have a good charger and cycle your packs regularly. Buying a high cap pack and using a wallwart to charge it gains you nada. Edit: Besides weight. |
RE: Receiver batt question
ORIGINAL: opjose Most wall chargers only output either 50mA or 100mA which is a conservative ''trickle'' charge for any larger pack. I regularly charge 3800mAh 6v RX packs with a 50-100mA 4.8v charger. I just don't get a full 3800mAh out of the batteries... normally I get around 3600mAh when charged this way, and that's just fine with me. The s-l-o-w-w-w charge also assure the packs last much longer as it is very gentle on the chemicals. For instance, a 5 cell(6volt)1400mAh NiMH 2/3A battery when connected to a 50mA 4.8V lead of a wallwort for three days or more will only accept about 350mAh worth of charge when discharge tested to a 6 volt cut off and 1/2 amp load. In effect if you don't get a full charge, your just flying extra weight around, even worse the, false belief of extra flight time. A slow or over night charge for a nickel metal hydride battery is to charge at C/10 or below (10% of the rated capacity per hour). So a 500 mAH battery would be charged at 50 mA for 15 hours. Everyone should use pocket sized field voltage meter with load before every flight, it only takes a moment. http://www.hangar-9.com/Products/Def...?ProdID=HAN171 |
RE: Receiver batt question
Not true...
( FYI: Most 4.8v chargers produce closer to 5.4v unloaded anyway... ) As I said I TESTED the charge on my packs and while I'm short of full capacity, as the wall wart chargers cannot sustain the load caused by the pack as it approaches full charge, I'm within 90% or better of full charge. On my larger packs loosing 50-200mAh is not a big deal considering how little adverse effect this has on the packs. It's like trickle charging your batteries, as far as the chemisty goes. I charge AA sized 2000mAh 6v Hydramax packs with my JR chargers all the time. I get at LEAST 1700-1800mAh out of the packs when tested under load which is well within what I expect. BTW: I've tried those 2/3A packs and I find that no matter what you use to charge them the cells do not seem to be large enough to sustain the draw from the servos. I've been underwhelmed with their performance after testing several brand new Duratrax 2/3a 1400mAh 6v packs on my ICE and TC-1030 charger's testing regimes. |
RE: Receiver batt question
ORIGINAL: opjose Not true... ( FYI: Most 4.8v chargers produce closer to 5.4v unloaded anyway... ) As I said I TESTED the charge on my packs and while I'm short of full capacity, as the wall wart chargers cannot sustain the load caused by the pack as it approaches full charge, I'm within 90% or better of full charge. On my larger packs loosing 50-200mAh is not a big deal considering how little adverse effect this has on the packs. It's like trickle charging your batteries, as far as the chemisty goes. I charge AA sized 2000mAh 6v Hydramax packs with my JR chargers all the time. I get at LEAST 1700-1800mAh out of the packs when tested under load which is well within what I expect. BTW: I've tried those 2/3A packs and I find that no matter what you use to charge them the cells do not seem to be large enough to sustain the draw from the servos. I've been underwhelmed with their performance after testing several brand new Duratrax 2/3a 1400mAh 6v packs on my ICE and TC-1030 charger's testing regimes. I have not been able to consistently replicate your results with my collection of wall chargers and various AA or 2/3A 5 cell packs. (FYI:I generally stop flying when my 5 cell packs reaches 6 volts, so I don't see how an "unloaded" charge voltage of 5.4 helps charge a pack.) I'm phasing out my 2700 AA packs in favor of 2/3A 1400-1600mAh packs, much less voltage drop under servo load from what I've observed. No problems charging with any of mine using a Double Vision, Super Brain 989 or Triton 2 chargers. None are Duratrax packaged thou. I will agree we have totally opposite results. |
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