Another battery charging question
I have a boat which I occasionally use for overnight camping. Yesterday I put the boat in the water after sitting on a lift for a couple of months. Batteries good when last used. Battery cutoff swi...
Forum Discussion
this is from a motorcycle site, but it applies here:
Self Discharge
One not-so-nice feature of lead acid batteries is that they discharge all by themselves even if not used. A general rule of thumb is a one percent per day rate of self-discharge. This rate increases at high temperatures and decreases at cold temperatures. Don't forget that your Gold Wing, with a clock, stereo, and CB radio, is never completely turned off. Each of those devices has a "keep alive memory" to preserve your radio pre-sets and time, and those memories draw about 20 milliamps, or .020 amps. This will suck about one half amp hour from your battery daily at 80 degrees Fahrenheit. This draw, combined with the self-discharge rate, will have your battery 50 percent discharged in two weeks if the bike is left unattended and unridden.
- See more at: http://www.batterystuff.com/kb/articles/battery-articles/secret-workings-of-a-lead-acid-battery.html#sthash.lkoJ6Tp4.dpuf
Self Discharge
One not-so-nice feature of lead acid batteries is that they discharge all by themselves even if not used. A general rule of thumb is a one percent per day rate of self-discharge. This rate increases at high temperatures and decreases at cold temperatures. Don't forget that your Gold Wing, with a clock, stereo, and CB radio, is never completely turned off. Each of those devices has a "keep alive memory" to preserve your radio pre-sets and time, and those memories draw about 20 milliamps, or .020 amps. This will suck about one half amp hour from your battery daily at 80 degrees Fahrenheit. This draw, combined with the self-discharge rate, will have your battery 50 percent discharged in two weeks if the bike is left unattended and unridden.
- See more at: http://www.batterystuff.com/kb/articles/battery-articles/secret-workings-of-a-lead-acid-battery.html#sthash.lkoJ6Tp4.dpuf
