I re-batteried my 2-RL1000s last spring so hopefully I'm good for another year or so. Spring? I still got snow and ice on the ground! Last nights low was 22...
Hi Jerry and everyone else here on the list, I think these are called A123 cells here in the US. I'm somewhat familiar with them because I use them to power...
Yes the amps are in the battery section of the Robomower Wiki. Wow, the A123 stuff has definitely come down in price. They used to be sky-high. The current...
Hi Tim and all, Â I'd like to make some comments on LiFePO4 battery concerning your topic. Â LiFePO4 is a new lithium chemistry which is still in the stage...
Well I put a lot in the Robomower wiki at: http://robomowerwiki.com/index.php/Battery_pack Based on my actual measurements with my RM800, I chose a 5A rate as...
It should be noted that in the RL-1000 software from 2007 on you can configure the shut-off voltage if you know the "secret" pass-code. I was thinking about...
Both battery packs are down to 15 minutes. Is this a sign to replace them? (just kidding) I'll look back through old posts to find a battery recommendation....
Austin if you went with a LI type battery your battery compartment would have room for balast. ... can ... I was ... reduction is ... weight is ... there is ...
... We're using these in our Gen 1 Automowers. We have 2 banks of 10, and they fit right in the original battery case. The battery life between charges is...
Please help. I have two Robomowers which both display similar symptoms. One is an RL1000 and the other a RL850. Both are 3 - 4 years old but have had recent...
Lithium batteries have a limited calendar life which often limits their lifetime more so than the number of cycles. This can reduce the life to a couple of...
That may or may not be true. LiFePO4 do have a significant voltage drop. The question is, how many can we put in series before the peak, full-charge voltage...
I am having trouble with the math. The A123 is 3.3V at 2.3AH How do I get to 24V and 20AH with 2 banks of 10?? I either get 6.6V at 23AH or 33V at 4.6AH. I...
I think this can be gears wearing out and not able to compensate for the slope. Your DK calibration can be OK still. I have had this on narrow strips of grass...
You'd put "n" cells in parallel and then put those in series. OK, looking at more actual data, the A123 is 3.3v nominal, and 3.6v max at full charge. So 8x in...
WBob the automowers use 18v batteries not 24v you need to recalculate. ... I get to 24V and 20AH with 2 banks of 10?? I either get 6.6V at 23AH or 33V at...
A123's cell is also of LiFePO4 chemistry. It's known to all the A123's cell has very good performance in high power discharge and charge. But I'm not sure...
OK..I am still lost... Two banks of ten give 33V at 4.6AH still not 18V either. If you are going to arrange 20 cells for 18V then I would think you would have...
Hi Wofbob, Â Yes, it's impossible to make 24V20AH with only 20 cells of 3.3V2.3AH. Divided 24V by 3.3V, 7 or 8 strings of cells should be connected in serial,...
My RL800 has been going strong since 03 but its time for an overhaul. Need to replace both rear wheels and fix the cradle for the hand controller. Since Tyler...
You could try out PalomarRobotics.com. It's a new dealership in Southern California and they offer sales, parts, and service. ... [Non-text portions of this...
This is a warning to all, especially new members to this group. This group will Not tolerate Spam of any type! Period!! A couple of days ago I approved what...
Well at 1:30pm on the 15th it was half spam most of it had been there awhile. I see now that somebody has cleaned it up. Looks good now. ... Spam. ... and...
Hi All! Since the new year is getting wound up I figure it's time to get rid of my '08 demo machine. This is the mower I used in the field so it has been on...
