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lithium battery Diy

 
Old 06-19-2010, 03:17 AM
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Basal Skull
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Default lithium battery Diy

Voltphreaks VPH900
+ home made aluminum mounting bracket = 4kg or 8.8 lbs

Old lead acid battery = 17.4 kg or 38.3 lbs

so 29.5 wt loss.
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Old 06-19-2010, 08:05 AM
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Wow...................thats cool!
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Old 06-19-2010, 10:20 AM
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nicely done.

are your hood shocks worn out?

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Old 06-19-2010, 11:16 AM
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That battery is cute. Does it have the same power specs?

Hood shocks, accumulators, slave cyliders...
Replace every 5-8 years, yeah?
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Old 06-19-2010, 01:40 PM
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I have a carbon hood/fiberglass hood so kept the hood shocks off (to save wt and shocks become too strong for the hood).

power specs:

Item Specifications
Model Number VPH900
Nominal voltage 12.8 volts
Cranking Amps (CA) 1020 amps
Cold Cranking Amps (CCA) 570 amps
reserve capacity (RC) 42 minutes
Capacity 22 Ah
terminal type SAE post, M6 male, M6 female (click for images)
working temperature -22░F to 140░F (max 170░F)
dimensions 10 x 6 x 3" (not including terminals)
weight 7.25 pounds


Voltpheaks have a special on for the VPH 750 and VPH 900 right now, there's a rennlist discount for either one of these batteries. (there was a thread on the 997 gt2/3 forum)
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Old 06-20-2010, 12:10 AM
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Originally Posted by Basal Skull View Post
Voltphreaks VPH900
+ home made aluminum mounting bracket = 4kg or 8.8 lbs

Old lead acid battery = 17.4 kg or 38.3 lbs

so 29.5 wt loss.
So a $1200 battery to save weight ... next to a ... CD changer?
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Old 06-20-2010, 12:39 AM
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Originally Posted by Carrera GT View Post
So a $1200 battery to save weight ... next to a ... CD changer?
yes sir, so your point is?
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Old 06-20-2010, 10:01 PM
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Doesn't that make the car tail heavy? Ha!
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Old 06-15-2019, 12:09 PM
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Well, thought I would update. After 9 years, this battery has lost its oomph... it'll start the car but does not crank as well as it should. On a cool day, it will sometimes not crank/catch with the first turn of the key. Made me nervous enough to get a battery booster to keep in the trunk when further from home, then recently put a new standard battery back in for now (and it cranks like normal).
Sooo the life expectancy is about 9 years, 27K miles...
Apparently these batteries can be sent back for rebuild, might do that...or there's other options now. Will look around a bit.
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Old 06-17-2019, 03:04 PM
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That is a great run if you got 9 years out of the Volt Phreaks. Good job to Volt Phreaks!
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Old 06-18-2019, 11:06 AM
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That's cool. I thought about this upgrade in the past. Seams to simple. I always lean towards the projects that take forever to finish. Lol
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Old 06-18-2019, 12:20 PM
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Originally Posted by tacker View Post
That's cool. I thought about this upgrade in the past. Seams to simple. I always lean towards the projects that take forever to finish. Lol
Yeah, and the projects that only you can do! Lol
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