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#11 (permalink)      1/26/2014 12:53:01 PM US Central   quote/reply + tips
Ryanjk
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What are the inside terminals for. There is obviously one for temp but there is a input pos and ground. When power is hooked up the two outside contacts are at 4.x and the two inside pos and ground are at about 4.3.
#12 (permalink)      4/5/2014 10:12:20 AM US Central   quote/reply + tips
rbrown
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Hello I am new here and I been using these type of charging modules for a little but now.. they work great for charging the cells.. however I am working on a new project that will have a pretty big battery capacity (15000mah) and I'm curious just how good these modules work in parallel ..could I push say 4 amps from the source and tie 4 of these in parallel to get a higher charge rate? I'm figuring it would work .. would just like some input on using these for higher charge rates.. battery bank is all parallel .. thanks
#13 (permalink)      5/1/2014 7:27:52 AM US Central   quote/reply + tips
olbuyer
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@Ryanjk: according to the manufacturer these should be an alternate power input.
#14 (permalink)      6/4/2014 10:32:48 PM US Central   quote/reply + tips
Vaportrain602
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Can this charge 2 3.7 18650 batteries in a series or do I need to add something or will this not work?
#15 (permalink)      6/4/2014 10:41:12 PM US Central   quote/reply + tips
olbuyer
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@Vaportrain602: no, this wont work; the charger is for 3.7V (4.2V) as is, so you can only charge 3.7V cells parallel; for serial you would need another charger pcb which can provide up to 8.4V.
From the datasheet of the TP4056:
"The charge voltage is fixed at 4.2V, and the charge current can be programmed externally with a single resistor."
#16 (permalink)      6/4/2014 10:43:24 PM US Central   quote/reply + tips
Vaportrain602
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Which resistor would you recommend ?
#17 (permalink)      6/4/2014 10:48:05 PM US Central   quote/reply + tips
olbuyer
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The charger ships with a resistor for 1000mAh which is fine for most 18650; if you want to charge smaller cells like f.e. 18350 it might make sense to reduce the current. For more info see here and here.
#18 (permalink)      6/14/2014 7:50:15 PM US Central   quote/reply + tips
Str.bean
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In war hawk's picture, the voltmeter is in parallel to the battery. Seems like this would get an odd reading while the power is plugged in. Am I mistaken - will it actually read the battery voltage while charging?