alt.energy.homepower

On Fri, 15 Feb 2008 13:34:27 -0600, z wrote:

>So its time to buy new batteries.
>
>I'm thinking four t-105s or equiv.
>
>Then I call a battery place and they say they've got the trojans for $129
>or the centennial GC2200 for $80
>
>/
>
>They spec out to be pretty similar, but I haven't been able to find many
>reviews.
>
>Are the trojans worth the extra $50 a pop??
>
>thanks again for all the advice. This newsgroup is pretty top notch
>
>-zachary

Once consideration would be the planned use, and your storage requirements.

But also, when I go to the site you specified above, I do not find, for the
Centennial batteries, specifications on which to make a decision. In
particular, they don't spec a 20 hr rate, or even the weight of the
battery.

In particular, for a deep-cycle application, you would want to know the
battery capacity at your withdrawal rate.

Maximum amp-hr capacity, which Centennial does spec, is meaningless without
knowing the rate of withdrawal. Batteries have a higher capacity at lower
rates of withdrawal.
--ron