Another direct Trojan quote -
–When do I need to perform an equalization charge?
Equalizing should be performed when a battery is first purchased
(called a freshening charge) and on a regular basis as needed. How
often this might occur with your battery will vary depending on your
application. You will need to monitor your battery voltage and
specific gravity to determine when equalization is needed. For
example, it is time to equalize if the measured specific gravity
values are below manufacturer's recommended values after charging
(recommended value for Trojan Deep Cycle batteries is 1.277 +/- .007
at 80o F). Equalizing is also required if the specific gravity value
of any individual cell varies 30 points or more. Reduced performance
can also be an indicator that equalizing is necessary. Equalization
should also be performed when individual battery voltages in a battery
pack range greater than 0.15 volts for 6 volt batteries or 0.30 volts
for 12 volt batteries. A good rule of thumb is to perform equalize
charging once every 10 cycles.

http://trojanbattery.com/customercare_faqcharging.html




On 11 Nov 2003 18:21:32 -0800, (Mark) wrote:

Larry Demers wrote:
Trojan agrees with the advice to forgo Equalization Charging. I bought 4
T105's and they came with information that said that EQ should NOT be done on
these batteries.

Not true.

Direct quote from the Trojan Battery website: "Many experts recommend
that batteries be equalized periodically, ranging anywhere from once a
month to once or twice per year. However, Trojan only recommends
equalizing when low or wide ranging specific gravity (± .015) are
detected after fully charging a battery."