Guru
Joined: 15/07/2006
Location: AustraliaPosts: 676
| Posted: 10:56pm 04 Feb 2012 |
Test 3
The Zivan charger output was wound back to 155vdc. The same 3.7v chargers were run with a 240vac input. The results are as expected.
Cell 11 and 6 showed up as the high cells like in other tests. Cell 36 was obviously quite bit lower in state of charge than the others. Most cells were fairly close in voltage after 1 hour. But it was around 3.5 hrs to get them all to be similar voltage.
I ran this setup for a while, charging over night with the Zivan to 155v and then in the morning I switched on the 3.7v chargers. It was usually around 1/2 an hour to have them all to be within the highest of 3.79v an lowest of 3.70v. This is by far the closest I have ever had the cells in my battery pack.
(To manual balance 45 cells with 4 small 0.3A x 3.65v chargers and 2 auto lights takes 3 days to change the pack very little).
The biggest problem of this balance option (single cell charging) is the connection of so many wires, input and output, but for a balanced pack in 1/2 an hour every morning is brilliant.
Trev @ drivebynature.com