My experience is that high capacity-cells e.g. AAA with 950-1100mAh or AA with >2100mAh mostly show lower capacity. My 750-800mAh AAA and 1900-2000mAh show sometimes more capacity than it´s rating.
I have many Discounter-cells which are sometimes far away from it´s ratings, some better manufacturers like Panasonic/Eneloop/Duracell/Varta are more close to the ratings.
General experience is that the S4+, Keeppower L4 and Zanflare C4 show less capacity than the Skyrc NC1500, Opus C700/C3100, Accupower IQ338XL, Voltcraft CM420.
20mA is a bit low, maybe contact problems or a very bad cell? Tried other cells on this bay?
Yep, a voltage around 1,4V is normal after charging, my other chargers show also this voltages. At the end of charging it should show 1,52-1,55V, but after the voltage drops fast to lower values.
I have a question. I recently ordered two of these chargers, and one of the selling points is that each bay can charge at up to 3 amps, for a total of 12 amps if 4 batteries are being charged at once.
I looked into how many amps are available from a normal USA wall outlet, and the consensus seems to be 15-20.
My question: if I was going to charge 8 batteries by using these two chargers simultaneously, do I need to plug them into separate outlets because each one is drawing 12A, which would be greater than a single outlet can provide?
My S4 did not ( and does not ) come with a standard 12v cigarette/aux car power adapter. However, it’s the usual 5.5mm x 2.1mm barrel-type male connector, standard to my Xtar VP2, Eizfan S4 touch-screen, Maha c9000 and SkyRC MC3000, and even the CPAP machine, and can be bought in most DIY or accessory shop locally or online.
I am using the latest (ver 3) version of the charger, does this statement still hold: “The internal resistance values are only about half of actual resistance, but they are fairly consistent.” ?
I just received a S4+ v3, and noticed on multiple BK-3MCCA Eneloops it showed 1mOhm of resistance. This seems… unlikely. I re-seated them multiple times and always got the same. Has anybody else seen this? Every other battery I’ve tried is showing resistance that I’d expect, just not these cells. My SkyRC MC-3000 shows 8mOhm on the same cell as the S4+ was reading as 1mOhm, for example.
I charged other cells (lithium-type) in these slots, then re-inserted the Eneloops, and now they show 30-40mOhm. I re-seated them again and rotated them around a bit and now they are reading closer to the MC3000, but it’s still hit or miss.
I’m not really sure what to think about this level of non-repeatability with this charger on these measurements. The reviews were a lot more kind to the repeatable IR measurement, but I’m having the opposite experience, at least with button-top style smaller cells.
I’ve re-seated them multiple times and it seems like placement or something else is drastically affecting the resistance measurements. I’ve also noticed with some other button-top batteries of the 14500 size the contact is a bit strange/hit or miss (especially on those with smaller buttons), so it may just be a function of button-tops not making great contact every time.
The first two were done on Auto current, the last one was done on 1000mAh. They seem low, but is this a typical experience due to this charger just being inaccurate? I read some of the other threads but am still don’t understand if it’s just reading it low. I would hope Illumn being a recommended battery place would send me new/grade A cells.
Try charging the cell to 4.20V using Manual mode with a current of 500mA.
Then use Cap Test in Manual mode with a discharge current of 500mA. Use the second or third slot.
Cap Test will Charge, Discharge, Charge and display the capacity at the end of the Discharge stage. The first Charge stage will be very short if the battery is already at 4.20V.
If the battery is at 4.15V and if you rely on Cap Test to charge to 4.20V then it will terminate the charge at 4.20V +/-0.05V. When using Auto it might select a higher charging current and terminate a bit earlier (e.g. 4.18V) and then discharge.
Thank you, am currently doing a cap test on Manual at 500mA but on the first slot as I read that the two outer slots have heatsinks. I’ll try it on the inner slot next. What would be an acceptable range of mAh, anything above 4300mAh for this new battery? Or 4400?
I’m new here, and this is my first time posting on BLF. I recently purchased a Vapcell S4+ V3 charger and received it just yesterday. After going through the topic, I came across a test conducted by HJK. In that review, it was noted that the older first version of this charger displayed the internal resistance as being only half of the actual battery resistance, which raised concerns about its accuracy.
Given this, I wanted to ask if this issue has been resolved in the newer V3 version of the Vapcell S4+ charger? Does the V3 still have the same internal resistance display issue, or has it been improved for more accurate readings?
I appreciate any insights or experiences from others who have used the V3 version.
