To understand better what is charging algorithm - you can start with this very informative web site.
Charging Lithium-Ion Batteries
Charging Lithium-Ion Batteries
Trustfire chargers Blow Up?!
- Thread starter popeye79
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I just checked a Trustfire flame 2400mah cell that came off my cheap single slot 650ma charger and it came off the charger (after about 10 minutes to allow the cell to settle) at 4.2059 volts. I've never had one go above 4.2100 volts on this charger.
I'm happy with this cheap charger
I'm happy with this cheap charger
I understand charging algorithm. What is the part making the noise, and where is it in the PILA charger?
It's obviously not the algorithm making the noise.
It's obviously not the algorithm making the noise.
Mine has a humming/buzzing noise. It's not overly loud at all, and exists whether there's batteries in it to charge or not.
I don't think so. The Maha charger also charges Li-ions and NiCads. That's why it's called a "Universal" charger.
It makes a whining noise sometimes (not always) regardless of which type or capacity of battery is being charged. Since I've had it for about 10 years now and have charged every kind of battery imaginable on it without issue, except SLA and including an occasional LiPo, the results speak for themselves.
I have found that a less than firm connection is often the culprit when whining noises happen to a charger. The universal charger I have relies on adjustable pins or alligator clips or dedicated plug-in type connectors. Often, when the pins aren't making good contact, the battery is still being charged, but I will hear a whine. Shifting the battery around to achieve a tighter connection usually silences it. A loose connection, as would be caused by worn springs, will cause that whine.
Chargers have parts in them. Only a couple of them can whine. If you can find the noisy part can you just cut t out?
Just make sure you don't take the algorithm out, it's needed
Just make sure you don't take the algorithm out, it's needed
Chargers have parts in them. Only a couple of them can whine. If you can find the noisy part can you just cut t out?
Just make sure you don't take the algorithm out, it's needed
I don't think the old MaHa's will ever die. I'll tell ya talk about a charger.....
Probably misunderstanding.
I assumed (from the title) that this thread is about 18650 li-ion chargers - Trustfire.
Must admit I did not know that Maha have any model that can charge 18650 li-ion 3.7V cylindrical cell.
If somebody can provide a link that would be great . More knowledge is always better.
I have the Maha MH-C777 Plus II charger. I googled it to get a link, but found out it was discontinued. Too bad. There's probably a replacement that does the same thing but I was too lazy to hunt it down. Because of the variety of ways you could attach a battery, it charges flat, irregular an oddball sized batteries. For cylindrical batts, you used a pin on one end and a clip on the other, or a battery carrier, which is the preferred way for one or more cylindrical batts. I use it to charge spare batteries for a Sandisk Sansa MP3 player, which have little teeny tabs, and nearly any kind of Lithium, NiMh or Nicad. It's great for charging the 4X18650 battery pack I use on my bike light because when they're in a carrier, it charges them like a 14.8V battery pack, keeping them all balanced. You can google it to see how it's built and so forth, but if you want one, you'd probably have to find it on ebay.
Thank you . New useful info for me.
Didn't know about charging single li-ion cell to 4.2V.
In my previous post when I was referring MaHa as NiMh charger I meant those multibay AA/AAA chargers like C9000.
Well have to read more carefully before I post.
Didn't know about charging single li-ion cell to 4.2V.
In my previous post when I was referring MaHa as NiMh charger I meant those multibay AA/AAA chargers like C9000.
Well have to read more carefully before I post.
I got that one too, the C9000. That's the one I just keep full of NiMh AAs. It's a really cool charger and does a lot of stuff.
Here's a pretty cool li-ion smart charger. You can also put a charged 18650 in it and charge up something else, like a eGo, with a built in 5V/500mah USB port. Pretty slick. It'll do 14500s and CR123's as well.
XTAR WP2 II intelligent 18650 lithium-ion battery charger
Here's a pretty cool li-ion smart charger. You can also put a charged 18650 in it and charge up something else, like a eGo, with a built in 5V/500mah USB port. Pretty slick. It'll do 14500s and CR123's as well.
XTAR WP2 II intelligent 18650 lithium-ion battery charger
SoShine makes some nice smart chargers as well. I did have one, but now a friend has it. A little cheap on the feel, but solid on the charging.
My case, the springs are very tight. It sounds like an electrical component, similar to the whine of a high power transformer. err...hard to explain a sound sometimes but it is like "MIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII" but when I put the batteries on it becomes "WO-O-O-O-O-O-O-O-O-O-O-O-O"
I think I will likely just put it in the "In case the other ones break" category.
I think I will likely just put it in the "In case the other ones break" category.
Very nice Xtar wp2 ll reviews I can see online. On CPF they call it "poor man's Pila"
Charging iPhone from usb is pretty neat
MASTER0FDAMPF, which SoShine charger are you talking about?
Fast 18650 li-ion battery charger -dual channel-1A per channel
This?
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