Search found 33 matches

by David LaFerney
Jun 29 2017 1:36pm
Forum: Battery Technology
Topic: What kind of charger?
Replies: 28
Views: 2573

Re: What kind of charger?

150 series datasheet: http://www.mouser.com/ds/2/260/Mean%20well%20CLG-150%20series%20-%20single%20output%20switching-1109585.pdf 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-D...
by David LaFerney
Jun 28 2017 9:26am
Forum: Battery Technology
Topic: What kind of charger?
Replies: 28
Views: 2573

Re: What kind of charger?

As long as you note that Battery Medics are not known for their accuracy, and verify balancing is really happening via multimeter, before you trust the BM's readings. ;) Absolutely agree - Battery medics are cheap and kind of cheesy - I keep at least one spare on hand because they do fail. I wish t...
by David LaFerney
Jun 28 2017 9:10am
Forum: Battery Technology
Topic: What kind of charger?
Replies: 28
Views: 2573

Re: What kind of charger?

like the CLGs a little better than the HLGs (I use both) since they generally have a wider voltage adjustment window. If you are running the bike at 12S, get a CLG unit that ends in 48A. Those will adjust from around 38 V up to around 52V, with variation from unit to unit. Then, you won't have to b...
by David LaFerney
Jun 27 2017 6:50pm
Forum: Battery Technology
Topic: What kind of charger?
Replies: 28
Views: 2573

Re: What kind of charger?

[ you won't have to bother with pulling your packs apart down to 6S blocks to charge. If you had 2 chargers you could easily stick one on each 12S2P section. I would expect output of around 175W from a CLG-150-48A I don't have to tear them down at all. It's one battery pack but it has a power and b...
by David LaFerney
Jun 27 2017 4:42pm
Forum: Battery Technology
Topic: What kind of charger?
Replies: 28
Views: 2573

Re: What kind of charger?

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 as I sta...
by David LaFerney
Jun 27 2017 4:41pm
Forum: Battery Technology
Topic: What kind of charger?
Replies: 28
Views: 2573

Re: What kind of charger?

Meanwell HLG60/80/1OOH A series. 24V adjustable 22 - 27v and adj amps 2.5 -4.0. A bulk charger not a balance charger unless you run a BMS. 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 n...
by David LaFerney
Jun 27 2017 3:12pm
Forum: Battery Technology
Topic: What kind of charger?
Replies: 28
Views: 2573

Re: What kind of charger?

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 as I star...
by David LaFerney
Jun 27 2017 1:41pm
Forum: Battery Technology
Topic: What kind of charger?
Replies: 28
Views: 2573

Re: What kind of charger?

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. What's the specific voltage? 25.2 maximum but I usually charge to 24.6 - I have 4...
by David LaFerney
Jun 27 2017 10:19am
Forum: Battery Technology
Topic: What kind of charger?
Replies: 28
Views: 2573

What kind of charger?

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.
by David LaFerney
Jun 27 2017 10:12am
Forum: Battery Technology
Topic: Charger Suddenly over charging !!!
Replies: 7
Views: 811

Re: Charger Suddenly over charging !!!

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 responses. I agr...
by David LaFerney
Jun 26 2017 11:22am
Forum: Battery Technology
Topic: Charger Suddenly over charging !!!
Replies: 7
Views: 811

Charger Suddenly over charging !!!

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 worries i...
by David LaFerney
Nov 15 2016 11:29pm
Forum: E-Bike General Discussion
Topic: Is Voltage sag damaging to batteries?
Replies: 14
Views: 1685

Re: Is Voltage sag damaging to batteries?

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 sag is ...
by David LaFerney
Nov 14 2016 11:22am
Forum: E-Bike General Discussion
Topic: Is Voltage sag damaging to batteries?
Replies: 14
Views: 1685

Re: Is Voltage sag damaging to batteries?

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 cells, but wo...
by David LaFerney
Nov 14 2016 11:01am
Forum: E-Bike General Discussion
Topic: Is Voltage sag damaging to batteries?
Replies: 14
Views: 1685

Is Voltage sag damaging to batteries?

I recently added voltage meters to the bikes that I put together for my wife and I... http://zenfixit.com/images/electric_bike/voltmeter.JPG 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 ...
by David LaFerney
Oct 18 2016 8:07pm
Forum: Battery Technology
Topic: No BMS - Do you use a fuse?
Replies: 13
Views: 1329

Re: No BMS - Do you use a fuse?

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 damage o...
by David LaFerney
Oct 14 2016 10:27am
Forum: Battery Technology
Topic: Another No Solder/Weld 18650 Build (Updated 03/09/2014)
Replies: 344
Views: 62969

Re: Another No Solder/Weld 18650 Build (Updated 03/09/2014)

Great job on this - and thanks for sharing your ideas and techniques with the rest of us. A kit to do this (minus cells) for a reasonable price would be game changing for home built ebikes. I just completed 2 simple bikes using ebay kits for which I built the battery packs out of 18650 cells - and t...
by David LaFerney
Oct 13 2016 5:01pm
Forum: Battery Technology
Topic: No BMS - Do you use a fuse?
Replies: 13
Views: 1329

Re: No BMS - Do you use a fuse?

Lots of good suggestions here. However, most of them involve using fuses at a voltage that they weren't really designed for, which I don't really have a problem with but since it's kind of critical that whatever you use actually works when it is needed is there any way to mathematically determine wh...
by David LaFerney
Sep 22 2016 12:01pm
Forum: Battery Technology
Topic: No BMS - Do you use a fuse?
Replies: 13
Views: 1329

No BMS - Do you use a fuse?

If you aren't using a BMS do you use a fuse or circuit breaker? If so how do you size it?
by David LaFerney
Sep 20 2016 8:35pm
Forum: E-Bike General Discussion
Topic: How to Solar Charge an Electric Bicycle
Replies: 496
Views: 80983

Re: How to Solar Charge an Electric Bicycle

I can think of 2 good reasons to persue this endevour. 1. This is a great science project. It can propel you to the next and next and maybe something practical can be the result. 2. If one intends or is currently in a remote area without electric. Not too many places like that but I know a few. May...
by David LaFerney
Sep 20 2016 8:10pm
Forum: E-Bike General Discussion
Topic: 9 miles, 320 lb guy, 20 mph, flat, winter
Replies: 45
Views: 2907

Re: 9 miles, 320 lb guy, 20 mph, flat, winter

Thanks for all the further advice. Won't it be a surprise the first time I stumble into the shower half-asleep and forget there is 420 W-h waiting to jump through my toes! you'll severely harm the life of the battery charging/using it while cold. So, I feel like this renders the whole project moot....
by David LaFerney
Sep 20 2016 7:38pm
Forum: E-Bike General Discussion
Topic: 9 miles, 320 lb guy, 20 mph, flat, winter
Replies: 45
Views: 2907

Re: 9 miles, 320 lb guy, 20 mph, flat, winter

I'm new to this also, and don't want a fire either - But I can't always be there while batteries are charging. On top of trying to do it in a safe location, I put the batteries inside of a "fat 50" mil surplus ammo box (with a small hole for the charge leads to go through) and I bought a yard of kev...
by David LaFerney
Sep 18 2016 10:46pm
Forum: E-Bike Technical
Topic: 2 Controllers Toasted in 2 Minutes?
Replies: 4
Views: 1438

Re: 2 Controllers Toasted in 2 Minutes?

We rode them about 10 miles today with no problems.
by David LaFerney
Sep 17 2016 5:38pm
Forum: E-Bike Technical
Topic: 2 Controllers Toasted in 2 Minutes?
Replies: 4
Views: 1438

Re: 2 Controllers Toasted in 2 Minutes?

Slow-Co, You weren't wrong. The problem was low voltage, but not for the reason you guessed - but your reply put me on the right track to figure it out. The LCD interface has lots of configurable things, and despite being sold as "36-48 volt" and the controller actually being labeled as 48v - the (h...
by David LaFerney
Sep 17 2016 3:44pm
Forum: E-Bike Technical
Topic: 2 Controllers Toasted in 2 Minutes?
Replies: 4
Views: 1438

2 Controllers Toasted in 2 Minutes?

I just finished assembling 2 ebay* kits http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemVersion&item=222117405994&view=all&tid=1775136905012 The homebuilt battery packs*** are 48v 20 amp and Should be about right for a 48V 1000W kit - I would think. Anyway, both bikes fired up - all systems go accordin...
by David LaFerney
Sep 13 2016 12:09pm
Forum: Battery Technology
Topic: I THINK I know how to hook up this BMS??!
Replies: 15
Views: 1086

Re: I THINK I know how to hook up this BMS??!

"Maybe you should have told the vendor you wanted it set for 13S." I agree - in retrospect that IS what I should have done. But I'm a do-it-your-selfer and they said that it was a user configurable thing, and I just assumed that they would also tell how to do it. suggest the unused 14th voltage det...