Have a charger for 36 V, didn't want to buy another. The remaining cells seemed to have held their voltage. One set at 3.31-32, other set at 3.27 V. These old cells just don't exist anymore?
Since I retired a few months ago in June, having more time to pursue riding my ebike. I had a set of 2 X 12 40138 green Lifebatts that were stored charged for 6 years. 5 batteries went bad. About 3 leaked, all 5 went low or zero volts.
Looking for a source of the old green 40138 10 ah...
I've always run 10-12 ah cells in series, the safest way by far. When my old 12 ah cells in one 36V pack started farting out, only the individual cells that were heating up and sagging were affected, not the other cells in the pack OR my newer 10 ah pack in series.
Since voltages in parallel...
So far I have not seen any other electric bikes, just donkeys and camels. Wonder what it would be like hitting a camel on a electric bike..?
Was the same in Korea, only saw 2 electric bikes there, one was on Osan Air base.
Finally got my bike back on the road after being 6 month in Israel. I started to assemble the green (I think PSI cells) I bought from AndyH before at least June 2009. They have been stored in God knows what heat from S Korea to Israel during the shipment in the summer. From about early Oct til...
Lord - a lot of development going on here. :)
My two cents worth if you are selling to the general public (who are using 5304, 5305s??). What voltage and amps can the 5304 continuously handle (say for 15-20 minutes) without any damage? You can sell "insane versions" in smaller numbers at a...
While moving was checking out my receiver amp that's over ten years old. Wouldn't work, so I took it apart. This might be interesting for you. White stuff is where SCRs or FETs were attached.
Bob,
I could have worded things nicer. I've been around construction types, probably picked up some bad habits.
BUT: Would like to know if you actually measured the surface temperature, or just calculated it. You just posted the temps on the graphs without any backup.
I don't sit on my...
That graph seems like a crock of s---. :?
Been running those green Lifebutt cells at 20-30 A for 15-20 min, felt cool to the touch.
We don't have a lot of hot air in Korea right now like other places, maybe that's it...the air cooling..
Wish Doc would take time off from drag racing to testing again. I need to buy another set of 40138 cells (and Lego mounts) before I move to Israel about 5 July. Don't think the mail room screener down there would like a bunch of cylinders showing up with terminals.
As Ypedal and I are finding...