Determining AH rating of aging batteries
My Trojan 125's are almost 5 years old now, when they were new they were rated at 240 Ah. Now my trimetric is showing 70% at 12.1 volts which I know is wrong. So how can I determine the true Ah rati...
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You right, me wrong. I can blame the extra 1 digit on a crippled hand but not the editing review lapse. Disculpame (please excuse me)
But, one model has color coding the other (my 110) does not have a color colored float bobber. I recommend a Freas with the color coding for old worn out eyes folks.
TIP:
Head for Home Despot. Go to the plastic plumbing department.
Purchase a length of PVC or ABS plastic pipe long enough for the entire hydrometer to fit in without bending the rubber tip hose.
One end of the pipe gets sealed with a plastic cap
The other end gets a threaded coupling. Slips on glued, but has threads for a threaded plastic cap.
I chose a threaded plastic cap that has the huge square wrench knob that my crippled fingers can fumble with easier.
No need to line the tube. The hydrometer rubber bulb and nipple flange act as excellent cushions. Don't try this, but three times the protected hydrometer has been dropped onto a concrete floor from a height of around one and one half meters. This is rude clumsiness on my part.
NOTE: ALWAYS FLUSH the hydrometer and bulb after using. Domestic water. Suck up as much water you can into the column, turn the hydrometer upside down and let the water slosh the rubber bulb interior clean. Three times. Minimizes rubber degradation, hardening and cracking. If you want to, coat the outside of the rinsed bulb and tip with HD silicone lube spray. Don't expose naked hydrometer to prolonged sunlight. UV kills genuine rubber.
But, one model has color coding the other (my 110) does not have a color colored float bobber. I recommend a Freas with the color coding for old worn out eyes folks.
TIP:
Head for Home Despot. Go to the plastic plumbing department.
Purchase a length of PVC or ABS plastic pipe long enough for the entire hydrometer to fit in without bending the rubber tip hose.
One end of the pipe gets sealed with a plastic cap
The other end gets a threaded coupling. Slips on glued, but has threads for a threaded plastic cap.
I chose a threaded plastic cap that has the huge square wrench knob that my crippled fingers can fumble with easier.
No need to line the tube. The hydrometer rubber bulb and nipple flange act as excellent cushions. Don't try this, but three times the protected hydrometer has been dropped onto a concrete floor from a height of around one and one half meters. This is rude clumsiness on my part.
NOTE: ALWAYS FLUSH the hydrometer and bulb after using. Domestic water. Suck up as much water you can into the column, turn the hydrometer upside down and let the water slosh the rubber bulb interior clean. Three times. Minimizes rubber degradation, hardening and cracking. If you want to, coat the outside of the rinsed bulb and tip with HD silicone lube spray. Don't expose naked hydrometer to prolonged sunlight. UV kills genuine rubber.
