Forum Discussion
MEXICOWANDERER
Mar 25, 2018Explorer
CAPACITY B.S. TESTER
WARNING! Instruments, tools and effort required
This is a 12.000 hour test not an 11 hour forty two minutes or 12 hour 16 minute test. Be ready to stop load at 12.000 hours
Excuse: Too much trouble I don't wanna do it. I want to guess then use tea leaves and E=MC2 parallel universe qualifications.
WARNING! Instruments, tools and effort required
This is a 12.000 hour test not an 11 hour forty two minutes or 12 hour 16 minute test. Be ready to stop load at 12.000 hours
- Get a hydrometer. Get a voltmeter
- Go to NAPA buy a 50 watt 12 volt screw in light bulb. Buy a pair of replacement battery charger clips
- Go to hardware store buy a ceramic light bulb base, 10 feet of duplex 14 gauge wire
- Go home and wire up the lamp just like it was a trouble light -- one wire pos the other neg. Good enough to test a single group 24 or group 27 battery
- Got an inductive DC handheld meter?
- This will make measurement more accurate
- Charge the battery to be tested as full as reasonably possible
- Connect the test lamp
- Note the voltage AFTER 2 MINUTES
- Is the battery a 100 amp hour model? Good, were are shooting for discharging the battery 50%
- Let's say the lamp is drawing 4.16 amps. Divide that into 50 amps = 12 HOURS later the battery SHOULD BE at 50% state of charge
- WELL, IS IT? YES? or NO?
- Check the state of charge by taking a hydrometer dip of all sic cells
- Then refer to a voltage chart for your battery
- WELL, IS IT at 50%? YES OR NO?
Excuse: Too much trouble I don't wanna do it. I want to guess then use tea leaves and E=MC2 parallel universe qualifications.
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