Albert Ace Posted July 22, 2023 Share Posted July 22, 2023 How do I do the above ?. Got some unused packs that need a refreshing cycle. Albert Quote Link to comment Share on other sites More sharing options...
Cuban8 Posted July 22, 2023 Share Posted July 22, 2023 Do you have a four button Lipo charger? They have a discharge facility. If not, a bit more complex. Nimh batteries don't suffer anywhere near as much, if at all, as the old Nicads from 'memory' so cycling isn't really necessary. Still worth a discharge now and again to check for weak cells. Quote Link to comment Share on other sites More sharing options...
Albert Ace Posted July 22, 2023 Author Share Posted July 22, 2023 Sir, please explain 4 button charger. I have an overlander RV6 ?? Albert Quote Link to comment Share on other sites More sharing options...
Albert Ace Posted July 22, 2023 Author Share Posted July 22, 2023 And do the experts think 2000 4 cell europop too old at ten years, although very little use and abuse ?? Cheers Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted July 22, 2023 Share Posted July 22, 2023 https://www.pinterest.co.kr/pin/quattro-lipo-battery-charger--469218854904412481/ Quote Link to comment Share on other sites More sharing options...
Shaun Walsh Posted July 22, 2023 Share Posted July 22, 2023 23 minutes ago, Albert Ace said: Sir, please explain 4 button charger. I have an overlander RV6 ?? Albert If you mean an Overlander RC6 it has both discharge and cycle functions for NiMH batteries. https://www.overlander.co.uk/pub/media/datasheets/Overlander_VSR_Manual_1.pdf Quote Link to comment Share on other sites More sharing options...
Frank Skilbeck Posted July 22, 2023 Share Posted July 22, 2023 Albert assuming your charger is the same as my overlander chargers, go to the Nimh setting then scroll through the options, set the discharge current, in my experience 1amp is a bit high I'd go with 0.5A with a cut off at 4 volts. Then give it a couple of discharge/charge cycles and see how it holds up. If the voltage drops significantly on discharge I wouldn't use it in a model. 1 Quote Link to comment Share on other sites More sharing options...
Cuban8 Posted July 22, 2023 Share Posted July 22, 2023 Good advice from Frank.........even better if you have a voltmeter and can monitor the voltage across individual cells during the discharge cycle. A duff one will soon show up as being much lower that the others after only a short time - usually just a single cell that does for a battery rather than an equal decline across all the individual cells. Quote Link to comment Share on other sites More sharing options...
Albert Ace Posted July 28, 2023 Author Share Posted July 28, 2023 Got another query. Left a model in storage, must be 6 or 7 months. Got it down to check it over and it's been left on, or accidentally switched on putting it away Almost new eneloop, 4 cell 2000 nimh. Should be alright to charge up ?? Albert Quote Link to comment Share on other sites More sharing options...
Frank Skilbeck Posted July 28, 2023 Share Posted July 28, 2023 It won't do any harm to try and recharge, but I would then cycle it a few times to see how it performs, but I suspect it might be beyond redemption. Quote Link to comment Share on other sites More sharing options...
Albert Ace Posted August 1, 2023 Author Share Posted August 1, 2023 Right, cycled three times. It comes up at 1880 on average. Is that okay for a 2000 Minh ?? Albert Quote Link to comment Share on other sites More sharing options...
John Lee Posted August 1, 2023 Share Posted August 1, 2023 Up to you but I had a very similar experience a couple of months ago with a battery in a slope soarer. I scrapped it (or rather confined it to bench use), for me it was not worth the risk against £12 for a new battery. My view was that the reduced capacity indicated not all was well and it gave doubts about it being able to cope with the unknown loads from the servos when in flight. Quote Link to comment Share on other sites More sharing options...
Outrunner Posted August 1, 2023 Share Posted August 1, 2023 22 minutes ago, Albert Ace said: Right, cycled three times. It comes up at 1880 on average. Is that okay for a 2000 Minh ?? Albert Useful for a bench testing but I would invest in a new battery pack if you want to fly safely. Quote Link to comment Share on other sites More sharing options...
Albert Ace Posted August 1, 2023 Author Share Posted August 1, 2023 Yes,sirs, kind of made my mind up too. Please suggest a good retailer ?? Quote Link to comment Share on other sites More sharing options...
Frank Skilbeck Posted August 1, 2023 Share Posted August 1, 2023 I find component shop very good. Quote Link to comment Share on other sites More sharing options...
John Lee Posted August 1, 2023 Share Posted August 1, 2023 Agreed Component Shop is good. I bought mine direct from Overlander as they had the exact configuration I wanted, again good service. Quote Link to comment Share on other sites More sharing options...
Tom Gaskin 1 Posted August 1, 2023 Share Posted August 1, 2023 Vapextech is very good too. Tom Quote Link to comment Share on other sites More sharing options...
Albert Ace Posted August 1, 2023 Author Share Posted August 1, 2023 Okay, thanks. Another ?? If I'm only flying 5 standard analogue servos, do I need 6 volt of is 4.8 ok ?? Sorry to pester Quote Link to comment Share on other sites More sharing options...
Denis Watkins Posted August 1, 2023 Share Posted August 1, 2023 Albert, Check 1st if you have 6v tolerant receiver And 6v servos 4.8v healthy pack will be fine Quote Link to comment Share on other sites More sharing options...
Albert Ace Posted August 1, 2023 Author Share Posted August 1, 2023 Thanks Quote Link to comment Share on other sites More sharing options...
Frank Skilbeck Posted August 1, 2023 Share Posted August 1, 2023 If it's a bigger plane then Sub C cells suffer from less voltage drop under load, but for 5 standard analogue servos it's maybe a bit of.overkill. Quote Link to comment Share on other sites More sharing options...
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