CRUISING ELECTRONICS E-Meter, Руководство пользователя

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Why monitor a battery?
Batteries can be ruined by excessive discharge. They may also be dam-
aged by under-charging. A battery (or bank of batteries) may be storing
less energy than you think. Your Meter provides all the key data you, or
your technician, need to make decisions about battery use and charging.
How does Your Meter work?
Your Meter uses sophisticated microprocessor technology to report all
significant battery information. Your Meter monitors battery voltage and
current over time to report Amp-hours consumed and time remaining --
precisely the information necessary to maximize system performance.
What's an Amp-hour?
Batteries are rated by Amp-hour capacity. A battery which delivers one
Amp for one hour has delivered one Amp-hour. Marine and RV deep
cycle battery capacity is based on their 20 hour discharge rate. A battery
which delivers 10 Amps to a load for 20 hours before battery voltage
drops to 10.5 Volts, is considered a "200 Amp-hour" battery. 10 Amps
times 20 hours equals 200 Amp-hours.
For maximum life you should never discharge more than half the rated
capacity of a battery. Therefore, if you have a 200 Amp-hour battery, you
should recharge when Your Meter shows
-100
in the Amp-hour display.
The
-100
means 100 Amp-hours have been removed from your battery.
FOR MAXIMUM BATTERY LIFE, RECHARGE
YOUR BATTERIES WHEN YOU HAVE DIS-
CHARGED 50% OF THEIR AMP-HOUR CAPACITY.
Battery Basics