![\"\"](\"\/wp-content\/uploads\/stealthbus\/images\/IMG_5355.jpg\")
<\/p>\nUPDATE: Second pack deliberations… Lithium pack<\/p>\n
The part of the project that arguably could make or break it. I have thought up two approaches to this issue:<\/p>\n
#Buy the cheapest off the shelf batteries in Costco and experiment \u2013 run a series of on road tests and get and idea of range \/ capacity in the real world. From here I would have useful stats about increasing power \/ range.<\/p>\n
#Buy high end batteries (Trojan look good) then put some real effort into getting the battery design right \u2013 and try to get right first time.<\/p>\n
!!!Option 1, Costco batteries<\/p>\n
Costco have a 12v \/ 115Ah Marine \/ Deep cycle battery for $84 \u2013 trying to determine the OEM so I can run the numbers with evconvert calculator.<\/p>\n
Useful web link: http:\/\/www.evconvert.com\/tools\/evcalc\/?s=b<\/p>\n
Using 12 batteries = $1008 + GA sales tax (6%)<\/p>\n
Brought 2 x Costco batteries purchased for measurements \/ experimentation<\/p>\n
!!!Option 2, Using Trojan 6V<\/p>\n
Requires 24 batteries @ $130 \/ each = $3,120<\/p>\n
The most important consideration with the batteries is the potential range. I have settled on 144v in the previous discussion about controller and motor. Using 144v will drive using either 12 x 12v, 18 x 8v or 24 x 6v for the battery configuration.<\/p>\n
!!!Option 3, C&D Technologies (Dynasty UPS) – “Max Rate”<\/p>\n
David offered option for a set of 12 second hand C&D Technologies AGM cell.<\/p>\n
Battery specifications:<\/p>\n
12v, AGM, 138Ah capacity<\/p>\n
http:\/\/www.cdpowercom.com\/product\/battery\/vrla\/pdf\/mr12_490.pdf<\/p>\n
Getting their first charge…<\/p>\n
<\/p>\n
Planned layout<\/p>\n
![\"\"](\"\/wp-content\/uploads\/stealthbus\/images\/batterylayout.png\")