Final features that will probably be included:
1. Adjustable charging current (0,05-0,10A-…–3,0A) in 0,1A steps.
2. Support for multiple chemistries (NiMH, lithium-ion, lithium ion HV, LiFePO4).
3. Temperature monitoring (45C max below 2A, 60C max below 3A).
4. 4 cell channels, with support for AAA sized cells all the way to the largest 21700/26650/D cells up to 78mm length.
5. Active cooling if temperature exceeds 45C, and if all channels are active above 2,5A.
6. Full current cutoff according to charging current (10%).
7. 12V-20V input voltage compatibility.
8. Nickel coated phosphor bronze/brass rails for highest conductivity and accurate internal resistance measurement. Or just well plated nickel plated A3 steel if too expensive.
9. Internal resistance measurement.
10. Manual low voltage recovery for normal lithium-ion cells
Below 2,5V, maximum charge rate of 100mA.
Below 2,0V, maximum charge rate of 50mA.
Below 1,75V, it has to be manually activated.
Below 1,0V, maximum charge rate of at 25mA.
11. Adjustable max voltage for lithium ion charging: 3,65V-4,35V in 0,05V steps.
12. Storage charge mode: 3,6V. Lower would be better, but it is too low otherwise for most people.
13. Individual channel selection.
14. 4 button UI.
15. 100-200-350-500mA-1000mA discharging functionality.
16. Automatic charging current adjustment available.
Some extras that would be very nice, but not necessary if costs exceed 49$US with the below feature set.
- microSD card slot for graphs.
- Bluetooth functionality.
- Charging/discharging graphs to a USB drive.
Feature freeze will occur at 11:59PM EST.