Page 1 of 1
DM-1801 charger schematic avaialble?
Posted: Sun Jul 25, 2021 4:26 pm
by n1kk
My charger from the day one out of the box, while charging never switches from RED to GREEN indicating fully charge.
I measure around 8.2--8.3 volts across the connection points of the charger and about
the same across a battery after charging for a few hours.
I would be interesting in seeing the schematic of the charger to determine what causes
the RED to switch to GREEN.
Thanks
Ken
Re: DM-1801 charger schematic avaialble?
Posted: Sun Jul 25, 2021 4:54 pm
by F1RMB
Hi,
Don't bother with that crappy charger, check this out
viewtopic.php?f=8&t=564
Cheers.
---
Daniel
Re: DM-1801 charger schematic avaialble?
Posted: Mon Jul 26, 2021 10:29 am
by G4EML
Ken,
‘A few Hours’ is probably not enough. The standard charger is very slow. It can take 8 hours to fully charge. You may need to leave it overnight.
Colin G4EML.
Re: DM-1801 charger schematic avaialble?
Posted: Mon Jul 26, 2021 10:44 am
by F1RMB
Hi,
I had one of my charger with the same symptom. Since I replaced the board, everything's working as expected.
Cheers.
---
Daniel
Re: DM-1801 charger schematic avaialble?
Posted: Fri Jul 30, 2021 6:21 pm
by n1kk
I ordered a TP5100 charger from ebay. Hopefully I'll have it next week. Shipped from
U.S.
I have stock board removed. Until the TP5100 arrives I am using my iMax B6 charger with leads
clipped onto the charging post.
Ken
Re: DM-1801 charger schematic avaialble?
Posted: Thu Sep 02, 2021 3:50 pm
by n1kk
the swap out took about 20 mins. The TP5100 is working perfectly.
Shuts off at the right voltage.
Ken