From what I read, the tp4056 with protected circuit can still damage the cell. According to data sheet, VOCP at 4.3v, VODP at 2.4v.
Is there an "easier" way to lower VOCP, 4.1v, AND increase VODP, 3.0v?
For your info, i'm not a expert, just a DIY guy.
I think i dont explain correctly.
I need to protect my cell, 18650, from over use, (Overcharge or Overdischarge)
I bought several TP4056+DW01 from Aliexpress.
Frankly, no schematic is needed, data sheet is enough?
I read several forum about TP4056 and DW01. Those chip are not perfect.
TP4056, is a OK a charger.
My concern is DW01 and restrict of space for my usage.
DW01 should protect the cell not to Overcharge and Overdischarge.
All I want is to change the cutoff circuit from DW01.
Overcharge detection voltage [VOCP] (V) : 4.250±0.050
Overdischarge detection voltage [VODP] (V) : 2.40±0.100
Here the perfect chip, FS312F-G
Overcharge detection voltage: 4.25±0.025 V
Over discharge detection voltage[VODP]: 2.90±0.08 V
I found a perfect chip for my need, but why should I buy if i could trick the DW01. Could I?
I check the CN305, it seem good, but not easy to find here :(
Till now, i could not find someone that could change the cutoff, probably because it it not possible with DW01 ??? :)
What do you think of this option,
1. Use TP4056 + DW01 + voltage divider for EACH cell
a. TP4056 charge to max 4.263V, good for not to Overcharge
b. DW01 + Voltage divider, i can adjust to cutoff around 3v, good for not to Overdischarge, but my cell stuck with TP4056 permanently.
2. Use TP4056 + FS312F-G (replace DW01)
a. TP4056, as a charger
b. FS312F-G, Cell protection
*sorry for my bad english,
*thx for good comment or suggestion :)