On 3/28/2015 6:48 PM, brucedp5 via EV wrote:
From: Roger Daisley
Date: Fri, 27 Mar 2015
After five years in my '86 VW Cabbie, my 96v flooded pack is ready for
replacement. I plan on adding two more batteries under the back seat floor,
using the Electro-Automotive kit, boosting to 108v.
My question to this group is: Should I be considering Lithium, or should I
wait for the next battery replacement cycle? I am thinking the Lithium pack
will be around $7000. Is this about right?
]
[......much deleted.....]
It states a 40 mile range and does 25 miles typically (that explains how
your pack lasted so long; you did not use it that much and now that it is
tired, its range can be reduced to ~25 miles and still works for you. But if
you make a pack voltage change, you will have-to change your WA lic-plate
from "96 volt" & your 96-volt.com web site URL.
> [..... more deleted....]
Different configurations compared:
24 US1800 56lb 107min@75A batteries weighs: 1416lbs
The 144V pack would have (1.783*75*6*24= ) 19.256kWh
A gain of ~2.48kWh and 344lbs
20 US2000 59lb 114min@75A batteries weighs: 1180lbs
The 120V pack would have (1.9*75*6*20= ) 17.100kWh
A gain of ~.324kWh and 108lbs
18 US125 67lb 140min@75A batteries weighs: 1206lbs
The 108V pack would have (2.33*75*6*18= ) 18.900kWh
A gain of ~2kWhs and 134lbs
I personally wouldn't hesitate to go lithium. Much lower maintenance and
weight. Virtually no peukert effect. You can use 80% of the battery
instead of 50%. However they need a different charge algorithm so you
may need to spend more on a new charger as well. I have CALB CA100FI
cells in my truck and I'm happy with them. To sort-of duplicate Bruce's
table:
45 CA100FI 7.5lb cells weigh: 338 lbs
The 144 volt pack would have 11520 kWh
Cost about $6000
38 CA100FI 7.5lb cells weigh: 285 lbs
The 120 volt pack would have 9600 kWh
Cost about $5000
34 CA100FI 7.5lb cells weigh: 255 lbs
The 108 volt pack would have 8640 kWh
Cost about $4600
My prices are high because I estimated shipping. I didn't include BMS or
charger. Figure another $2000 if you need them both. The kWh may seem
low (it's 80% of the theoretical maximum) but realize your vehicle will
weight 7-800 pounds less than it does now. You may also be able to fit
all the cells in the space your current batteries take up without having
to add any new boxes. When I converted my truck I went from 14 batteries
under the bed and 10 under the hood to 45 lithium cells under the bed. I
also spent a lot of time repairing acid-induced rot. Never again.
--Rick
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