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Latest blog entry: Freewing V2 Me 262 revival
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Been working great for me and a few others I know. I use it all the time now.
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I just picked a ISDT D2 dual port A/C charger, it has discharge as well as storage modes,, gives a wealth of info on its very bright LCD screen, my fav though is it shows resistance of each individual cell when charging, and also tells you when battery is at 90% so you can terminate charging there if you wish
Ps edit : maybe I should start putting my batteries into storage charge when not using for awhile?? |
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Just saw these, smarty quad kids...
https://www.racedayquads.com/collect...ery-discharger |
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I ordered and just received a few of them. Quick shipping, nice web-site and service. I wish the discharge power was higher. I will test them at home. -- |
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Latest blog entry: NOT AVAILABLE currently, sorry! DLG...
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Share a little review, I might get some of these as well. Sort of the solution I was looking for. The lower wattage is way safer especially on older packs.
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I wonder what's in those things. Could it be just a zener diode and something to limit current, like a resistor?? In that case:
https://www.digikey.com/product-deta...BCT-ND/7899990 |
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They have something smart enough to stop drawing current when storage voltage is reached with a pretty tight voltage tolerance, so I don't think it as simple as a diode and resistor. Looks like many more components on the board.
No 3S XT60 version unfortunately. The XT30 is a bit small for over 35A for me, although I suppose the quad guys push them much harder than that. I guess a faster discharge rate would make more heat which might not be great for carrying around, and likely would be too much for the tiny surface mount components. Kevin |
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Last edited by kcaldwel; Sep 19, 2018 at 06:23 PM.
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The LipoSuction gadgets worked as intended.
One battery I charged slightly above storage voltage (maybe 15.6V). The gadget sucked it down to 15.4V and turned off. Very slowly though, it took a lot of time just for 0.2V. The second battery I charged up to full voltage 16.8V. The gadget sucked it down to 15.5V on the next day when I checked it after work, and it was off also. So it works as designed. The circuit board was quite warm when plugged in. Not sure why they sell the 3D printed covers for the gadgets, and insist on using them. They are blocking heat dissipation IMO. Maybe to protect the fingers from the potential burns. But they do not get hot enough for that. |
Latest blog entry: NOT AVAILABLE currently, sorry! DLG...
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Are you saying that zener diodes don't have tight enough voltage tolerances? If I understand correctly, they conduct on the order of micro or nanoamps once the critical voltage is reached, so I don't think we have to worry too much about the cutoff.
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I guess that coresponds with the stated tolerance of +/-5.58%. That would be about 1.2V at 11V. Maybe there are ones with tighter ranges? Kevin |
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Last edited by kcaldwel; Sep 20, 2018 at 09:50 PM.
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There are some which are tighter, though I'd argue even the one you mentioned is better than no discharge. How about this one?:
https://www.digikey.com/product-deta...ICT-ND/3451586 |
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Tom |
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