Baja Designs Battery Explosion???
Posted June 29, 2002 - 08:33 PM
Would there be any problems running without the batteries or should I try to series them back together or should they be replaced with a battery isolator?
Any other suggestions?
Posted June 29, 2002 - 10:32 PM
Posted June 30, 2002 - 04:54 AM
Posted June 30, 2002 - 11:46 AM
Posted June 30, 2002 - 12:07 PM
BAJA DESIGNS sells this capacitor for $19.95. Its a 4200 micro farad unit. I have one on my bike.
Posted July 01, 2002 - 01:04 PM
Posted July 01, 2002 - 08:51 PM
RLucky82- The bike runs fine without the battery, however the lights, turnsignals, horn, etc. do not work-at all.
Motogreg- I did ride the bike this weekend with just the two AA batteries hooked up (just hafta ride)so I may have screwed up the regulator also. I have not tested it yet but I will. Where do I find the Power Sonic battery you listed? I'd much rather use a battery than the eliminator (capacitor).
Posted July 02, 2002 - 04:36 AM
Posted July 09, 2002 - 04:42 PM
On the batteries falling apart, if they're NiCads (10 little guys made into a series bundle) odds are they over charged and overheated from the overcharge. As NiCads get older, their "full charge" voltage drops from just over 14V for a 10 pack to perhaps 13.something volts. Give them say 0.3 volts beyond full voltage (when they have already achieved full charge) and they'll just keep heating up till they can melt the plastic wrap and even the solder.
An additional solution to keeping the headlight on to lower the system voltage and draw down the NiCad voltage periodically (avoiding the fully charged state plus still trying to charge circumstance) is to put a parallel diode and resistor in the charge line to the battery - let it deliver power through the diode and charge through the resistor (point the diode away from the battery positive terminal). You could experiment with 10's of ohms sizes. The test would be whether your batteries got hot after a long road ride, when they started out near fully charged. Bigger R reduces charge current and battery heating. Too big of R and you'd have trouble getting the batteries fully charged in too much stop and go riding. Overcharging is relatively a non-issue with lead acids except when severe and that usually just causes faster water loss.
You'll note the PowerSonic Ps1208 is 800 mAhrs. The little Nicads can easily be twice that capacity with smaller size (perhaps) and for sure equal size, which is why BD would go for NiCads in their design.