They are available in 10Ah and 20Ah packs and appear to be able to be charged with existing A123 chargers (same fully charged voltage)
Sun May 24, 2009 9:28 pm
Philip Experienced Roboteer
Joined: 18 Jun 2004
Posts: 3842
Location: Queensland near Brisbane
What is the length of life for a M1 and other Li batteries in robots? That is, number of recharges or months. _________________ So even the rain that falls isn't actually going to fill our dams and our river systems
Our XP.Well we finished up with 2 dead as in throw away LiPo packs, a 3 and a 6 cell pack at IF, only cheap ones but still cost more than these ebay M1’s. We have only lost a couple of M1 cells ever. None at IF.
My opinion M1’s more reliable but if you need more amp hours or desperate to save weight LiPo’s have advantages but the only reason we tried them was it looked like M1’s drying up or getting very expensive.
At $10 AU or less per cell we will be staying with M1’s unless good LiPo’s get a lot cheaper.
How long do M1’s last in combat bots? Longer than anything else we’ve tried.
_________________ Satisfaction is proportional to effort and results.
Wed May 27, 2009 9:53 pm
Valen Experienced Roboteer
Joined: 07 Jul 2004
Posts: 4436
Location: Sydney
lipolys seem to die fast if you abuse them (high discharges etc) they also have a shelf life of around a year. IE after a year of sitting there they are toast. _________________ Mechanical engineers build weapons, civil engineers build targets
Couple of new players in the A123 game. There are others to that I haven’t commented on. No sign of them drying up yet. _________________ Satisfaction is proportional to effort and results.
Tue Jul 21, 2009 8:56 pm
timmeh Experienced Roboteer
Joined: 20 Jul 2004
Posts: 2523
Location: Victoria
Ooooooooo fancy no more cb tubes _________________ Tim Team Reaper.
Wed Jul 22, 2009 7:13 am
andrew
Joined: 16 Jun 2004
Posts: 3110
Location: Castle Hill, Sydney. N.S.W
if anyone is interested maybe a bulk order as in someone buys it and then everyone chips in for a few or whatever they need
May look into a few soon myself _________________ Andrew Welch, Team Unconventional Robotics
Wed Jul 22, 2009 1:18 pm
shreddy
Joined: 09 Jan 2009
Posts: 518
Location: Wantirna, Melbourne
The day I stop giving 100%, is the day I stop competing
Wed Jul 22, 2009 6:50 pm
Andrew W
Joined: 01 Jun 2005
Posts: 220
Location: Melbourne, Victoria
Discharged my 1 yr old A123 packs today. Found the 4 cell pack only had 1570mA in it I suspect it is only one cell that is damaged and that one has a small dent in it and got a bit warm (melted the heatshrink) after the dumbell fight at last years Battleshed. The 3 cell pack that was connected in series with it has a capacity of 2170mA. I'll start cycling the cells in the 4 pack individually and see if it has damaged any of the other cells.
These cells are from Robot Market Place and have only really been used on the 100W scooter motors.
Sat Aug 01, 2009 8:23 pm
Damien (not Damian)
Joined: 15 Sep 2005
Posts: 327
Location: The other side of The Wall...Melbourne
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I suspect it is only one cell that is damaged and that one has a small dent in it and got a bit warm (melted the heatshrink) after the dumbell fight at last years Battleshed. The 3 cell pack that was connected in series with it has a capacity of 2170mA. I'll start cycling the cells in the 4 pack individually and see if it has damaged any of the other cells.
