Do you have some suggestions for the new vapcell charger?

Would it be possible to simply include a couple of spacers for shorter batteries that way the springs only need to support 18650 - 26800?

I’m 100% in favor of the feature list that @Kardel posted:

It will be nice if you can add some identification to your cell (barcode/QR/RFID/etc) and a reader to the charger so we can have history of our cells (num of cycles, capacity, etc.)

power bank mode.

Here are two features I would like to see in future advanced chargers.

1. Display actual charging current
It would be nice if ACTUAL charging current is displayed during charging. For example, when a charger is set to push 2A into a battery, the charging current slowly decreases as the battery fills up. I would like to monitor that information. I find the following information useful in my current charger: voltage, configured charging current, charged capacity in mA, time, internal resistance, and temperature. I would like to see actual charging current in addition to the information listed above.

2. Improved contacts
I would like improved contacts. I like chargers that displays detailed information of charged batteries, especially that displays internal resistance. I understand internal resistance measured in most chargers are inaccurate, but it still is an useful piece of information. However, the internal resistance measured usually depends on the goodness of contact between the charger and batteries. If I squeeze the contacts for better electric connection, I usually get better IR measurements. If the metal contact that are usually used in the chargers are improved, then I think the measurements can be much more reliable.

A charger with 4 point measurement for the IR and a storage mode (3.7V). Battery size from 16340 to 26800. Cell chemistry: Li-Ion, Ni-MH, NiCd and LiFePO4.

Ooh...

Great ideas!

A quad charger that had 2 bays 26800 capable and 2 that were 16340 capable would be cool.

The positive and negative terminals of s4+ charger are designed to better contact the battery

Can this design be continued in the future, or should it be improved? To fit more battery sizes

Is this a storage function or something else

If a Li-Ion cell is charged to about 80%, then the cell will last longer.

When not using a Li-Ion cell for a while, it can better if it's charged to about 80% for storage.

I'm sure Bort can explain it better than I can, though.

Thank you for your suggestion. This kind of battery is more suitable for fast charging of high current batteries instead of small batteries

The higher power of usb-pd is used in the charger. It is expected that there will be some difficulties, mainly in terms of cost, protocol and current distribution

18650 to 26800 works for me. I have plenty of chargers for smaller batteries. I only charge one or two batteries at a time, but a four slot with slot 1 & 4 for 26800 would work too. Storage voltage and 4.0v options would be nice, but not required for me. I can just check the voltage every now and then, lol. I do not like chargers that get really hot. High quality with whatever extras you think will sell best. Thanks for asking.

It could be improved by making the top part of the positive terminal a bit bigger, and by adding a small nipple on that big bit so that flat top 10440 and 14500 cells easily fit.

I managed to short a flat top 14500 cell in my S4+ charger and it left a burn mark on the insulation ring.

I agree that keeping a standard barrel plug (Or whatever is currently used) would be cheaper but I would like to see consolidation of power input ports from manufacturers across industries.

It’s not a deal breaker for me though, just something that’s nice to have. Ultimately you have to decide from a business perspective whether it’s worth pursuing.

Thank you for your support and advice

We will try our best to debug the charger so that the batteries of all sizes are in good contact

Thanks

80% power. Do you mean that the storage function sets 80 power?

Or do you stop charging when charging to about 4.0V in normal use?

I usually charge to full, but since 90% of my batteries are in storage at most times and not in actual use, they have less lifetime because they are stored full. Charging to 80% of energy (that is 4.0V?) will make them both suitable for storage and for normal use.

Come to think of it, my ideal setting would be 90% instead of 80, as a compromise between usability and battery lifetime. Maybe a charger could have user settings for 70, 80, and 90 ? :smiley:

Do you mean that the service life when I charge to 4.20V is much shorter than that when I charge to 80-90%? If not, there is no meaning. It is expected that the new charger will increase the storage function to 3.70v

If you need such a program, you need a very high-end charger to appear

It is equivalent to adjusting different charging voltages

Very advanced technology, seems not to have appeared in other chargers?

Thank you for your great advice

Do you have any pictures to illustrate what auxiliary accessories can charge a small battery?

thank you