Recent content by David LaFerney

Alright then - I'm sold. I ordered one of these this morning. I'm going to pair it with one of these - xh-m602 http://www.ebay.com/itm/XH-M602-Lithium-Battery-Charging-Digital-Control-Module-Switch-Protection-Board-/172596727897?hash=item282f911059:g:9hMAAOSw4A5Y2Sr6 - as a failsafe in case...

Absolutely agree - Battery medics are cheap and kind of cheesy - I keep at least one spare on hand because they do fail. I wish there was a high quality, adjustable (but reasonably affordable) equivalent. Especially one that could handle more discharge current / dissapate heat better. Anybody...

So just to be sure - you are saying that despite the CC voltage max rating being 24 volts a CLG-100-24 http://www.trcelectronics.com/View/Mean-Well/CLG-100-24.shtml will actually charge to at least 25.2v - and would be a good choice for me to charge 6S at 4 amps?

I don't have to tear them down at all. It's one battery pack but it has a power and balance lead for each internal 6S block. When I charge I use a parallel harness, and then a series harness for use on the bike. So far it's actually a pretty good alternative to a BMS, because I can use a 6s...

Yeah, that sounds like a good contender.

So these LED drivers Are safe and reliable? The price is certainly right. The charge starts out CC then transitions to CV as the current tapers down to almost nothing? I didn't know that LEDs had such complicated needs. I guess these are made for grow lights or something like that? I've...

I actually tried to buy a Satiator to begin with, but the appropriate model was out of stock. That might be what I end up getting, but they sure are expensive. I'd like to consider other options before I jump. I actually have a cheesy imax charger that I can use for a little while. As long...

25.2 maximum but I usually charge to 24.6 - I have 4 6s4p packs that I parallel charge and then connect 2 in series to use - 2 bikes.

I'm having to replace my charger - what do you recommend? I need to be able to set to a specific custom voltage for my home built 18650 pack. Links or specific model numbers to search for would be greatly appreciated.

Miuan - Thanks! That is exactly what I was hoping to find. I just ordered one off of ebay - less than $9 - just search for xh-m602 https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2047675.m570.l1313.TR2.TRC0.A0.H0.Xxh-m602.TRS0&_nkw=xh-m602&_sacat=0 Every one else - Thanks for the...

Since last fall I've been using a charger I built using a Drok boost voltage regulator ( https://www.amazon.com/DROK-Numerical-Regulator-Converter-Adjustable/dp/B01GFVI6R6/ref=cm_cd_al_qh_dp_t ) to charge my home built 18650 battery packs for 2 bikes that my wife and I ride weekly - and no...

With Lithium battery packs: A voltage sag like yours indicates the pack is too small. I'm sure that's true to some extent. Bigger is always better in some way I suppose. But then again if it does what you want for a reasonable life span (hopefully) and at a price that you can afford... Your...

5-10% of resting voltage? Right? They are supposed to be good cells - Panasonic 18650 3400 mah. If I were doing it over I would configure the packs as 12s5p instead of 13s4p - sacrifice the performance that we aren't using anyway to gain battery resiliency. That would have taken 8 more...

I recently added voltage meters to the bikes that I put together for my wife and I... After a few rides with them, it's clear that whenever you "get on it" the voltage sags around 3-4 volts - probably more at times. So if you consider 3.3 volts per cell to be the danger zone (42.9 for my 13s...

Thanks - after a little more digging I see that you are absolutely correct. Any fuse will blow at its proper current rating (unless something malfunctions) regardless of the voltage - but a low voltage fuse used in a high voltage application may allow a long lasting arc that could result in...