Wow! So many good suggestions.
Please make the charger USB C PD compatible. Many people already have PD chargers for their cell phones, tablets, laptops, etc.
Thank You.
Thank you for your advice
Yes, I hope there will be such vapcell chargers on the market in the future 
BTW, is a complete new design planned for this chrager or something similar to the S4+ (which I like, nice display)
Are any new chargers planned which can also charge 1,5V LiIon-cells? Actually I only know very simple chargers without Display/Analyzing-functions
My Samsung Galaxy S22 mobile phone has a battery life extending mode that only charges the battery to 80% (or 85%?) Supposedly to extend the life of the battery.
Ego gardening tool batteries (56V) have an inbuilt timer that will discharge a fully charged stored battery down to 30% (IIRC) if they’re left sitting for longer than a month. To extend battery life again.
I’m looking for a new charger as my current one struggles to fit 21700 (unprotected) cells in it. The cells outer plastic insulation can be damaged unless they’re carefully inserted and removed.
I’d also prefer a 12V DC input option so you’re not limited by whatever USB power supply you’re using. (Noting the many differing voltage/ current standards implemented by the different versions of QC, PD etc.)
For 1.5V lithium-ion batteries, yes, some chargers will consider adding the charging function of 1.5V lithium-ion batteries
It also has the function of discharging test capacity, but this one has a protective plate, and it will suddenly power off when it is constant at 1.50v
The debugging program needs to be corrected
My Samsung Galaxy S22 mobile phone has a battery life extending mode that only charges the battery to 80% (or 85%?) Supposedly to extend the life of the battery.
Ego gardening tool batteries (56V) have an inbuilt timer that will discharge a fully charged stored battery down to 30% (IIRC) if they’re left sitting for longer than a month. To extend battery life again.
I’m looking for a new charger as my current one struggles to fit 21700 (unprotected) cells in it. The cells outer plastic insulation can be damaged unless they’re carefully inserted and removed.
I’d also prefer a 12V DC input option so you’re not limited by whatever USB power supply you’re using. (Noting the many differing voltage/ current standards implemented by the different versions of QC, PD etc.)
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Thank you very much for your information sharing
Yes, many charger adapters use 12V power supply, which is more compatible
As far as just using for flashlights charging to 4.15-4.20 volts is perfect for me. I don’t think I’ve ever charge a particular heavily used flashlight more than a few hundred times. Most get maybe 20 charges until upgraded to new and or better. Each light usually gets it’s own new cell. In fact I don’t think I’ve ever killed a cell yet from excess charging. All so far that get recycled do so from being older lower capacity cells. Now if a major depression or Solar flares hit then I’ll treat them better.
I like my S4+ charger, but there are a few things I wish it had. There are lots of good comments in this thread.
- Storage function. This is probably something I would use a lot, and has been mentioned a few times already. An option to charge to 80% or 90% would be really handy as well.
- Higher output for power bank. In a power outage this is really useful, but I’d like to see support for at least 2A.
- A way to update the firmware, to fix bugs or add new features.
- An easier way to remove batteries after they are charged. Maybe adding a thumb tab on the bottom of the spring contact, so you push down on it to release the battery.
- An option to mute/unmute the alarm.
- Revive discharged NIMH feature. This is not used very often, but it would be nice to have.
1) My S4+ works well, but internal resistance of cell is not accurate is about 50% of the real value, surely this is an aspect to work on.
2) I think it would be handy to have a housing for D-size batteries as well.
Thank you, this could be nice
Thank you for your suggestion. S4 plus will be updated
It is expected to increase the storage mode and turn off the ring tone function
The conventional USB output of S4 plus is 2A. Ensure that the battery voltage and output are good
The new charger will be compatible with D battery and 26800 battery, and its performance will be upgraded
The charge/discharge performance?
That sounds good, thank you to get in contact with the community here and consider the feedback for the upcoming products :+1:
Some has already been written, but the following features are also important/interesting for me, to justify the purchase of a new charger:
- option to charge the batteries to ~90% (~4.1V)
- storage option, charge or discharge the cell to about 3.7V
- accurate internal resistance measurement (this might be challenging, most chargers doing it not precise enough)
- large cells such as 26800 and D should be supported, it would be nice if smaller sizes would still fit in (maybe with adapters if the spring slides don’t allow that)
- charge current variabel up to 2A per cell (better 3A) in 4 bay/cell setup
- variabel discharge current for analyzing the cells should be at least 1A per cell (better 1,5) in a 4 bay/cell setup
- a fan for cooling would be OK, but it should only run when the temperature requires it
I have chargers which allow to change the mode (Charge, Discharge, Test etc.) by pressing “Mode”-Button some seconds.
But I think it´s not possible to change the charge/discharge current without switching the mode; this also reset normally the charged discharged capacity of the cells.
If a charger is allow change the currents while loading without reset would be nice
I’m using the S4 and it’s magnificent. I’d love an 8 bay version with PD 3.0 100 watt input that charges 26800s
I believe the next chargers should accommodate larger protected 21700 batteries. Such as 76mm cells. Most chargers on the market do not support such larger cells. As mentioned, it should also support larger 26800 cells. Although the market is not huge for such batteries, it is gaining popularity. And future chargers should support such cells. All chargers should have an independent channel for fast charging. If the battery supports faster charging, the charger should allow independent charging per channel. Internal resistance, storage mode charging./discharging, battery repair function, higher amp charging. I higher wattage charger would be nice. You may need to add fan cooling to the charger. And, if I had my wish, I would make an 8/10 slot charger, with independent fast charging per channel. Even if you have to charge a little more, the mentioned features would be welcome. And one feature I would add to the next charger would be an XT60 input/output. So that you can use an optional external power supply charger, to power the charger. Perhaps it gives us the ability to use a 24v power supply to power the charger. All my RC Lipo chargers have that ability. Why not add it to these chargers?
I think it´s getting to huge and expensive.
Or Vapcell did it similar like ISDT with the N8, N16 and N24 