Re: New battery pack advice needed

["Peter VanDerWal" <peterv@peoplepc.com>]

>
> 1. 15 8v Trojan T-875's at 63 lbs each, $71 per batt (plus tax and
cables).  Perhaps Trojan T-890s instead but the $16 more per batt doesn't
seem worth it for 15 more AH of capacity.
>
> 2. 10 12v Trojan 31XHS's at 66 lbs each, $88 per batt (plus tax and
cables).
>
> Option #1 would increase my overall weight by 342 lbs, and would hopefully
give me increased range, due to the additional lead.
>
> Option #2 is $450 cheaper, due to only purchasing 10 instead of 10
batteries.
>


I'd lean towards the T-875s for range.  My truck (<3200 lbs.) uses 15 T-875
and range in warm weather to 80% DOD is about 30 miles.  I don't know how
your Pulsar compares weight wise, but it has to be more aerodynamic.

My truck is a small truck so it has a fairly small frontal area, but it has
the aerodynamics of a brick.  No, that's not true...I think the brick has a
lower Cd.

However power wise the T-875s 'might' not be up to what you want.
If I draw more than 300-350 amps (in warm weather) the pack sags below
terminal voltage.  However, if your present setup climbs hills adequately
with that kind of current draw then you will probably be ok.