10-10-2019, 12:08 PM
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#21 (permalink)
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Master EcoModder
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Ah, good point, I did not see that.
A 12v battery of 8 cells would be able to be regenned up to 160amps - if one could rig up an alternator or DC-DC converter capable of 160A@15V, that would be 2.4kW (3.2hp) of regenerative braking. That's about 30% of the regenerative capability of a stock Insight.
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2013 Toyota Prius C 2 (my car)
2015 Mazda 3 iTouring Hatchback w/ Tech Package (wife's car)
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 Today
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Other popular topics in this forum...
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10-10-2019, 12:23 PM
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#22 (permalink)
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Corporate imperialist
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I need a 4 cell LiFePO4 bms.
When I built my batteries there were none available.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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10-10-2019, 12:35 PM
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#23 (permalink)
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Master EcoModder
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Quote:
Originally Posted by oil pan 4
I need a 4 cell LiFePO4 bms.
When I built my batteries there were none available.
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There are quite a few options available now from $15-$140 depending on current needs. A 45a charge, 80a discharge, 220a peak discharge 4S LiFePO4 BMS is around $45.
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2013 Toyota Prius C 2 (my car)
2015 Mazda 3 iTouring Hatchback w/ Tech Package (wife's car)
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10-11-2019, 03:45 AM
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#24 (permalink)
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Master EcoModder
Join Date: Jun 2016
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I will keep these guys in mind if I ever get around to building an e-bike battery... 32 cells would make a really nice 52V/16Ah pack that can provide 400A of current. 20kW burnouts on a road bike, anyone?
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My current Ecotec project...
My last Ecotec project...
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10-11-2019, 11:28 AM
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#25 (permalink)
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Administrator
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I am wondering if we could use one of those 27 cell packs as a 14.4V jumper battery pack. It comes in a nice case with a handle. So you could charge it indoors for people who don't have access to outdoor charging. You would just carry it to your car and plug it in the cigarette lighter and it would maintain the voltage so the alternator wouldn't kick in... They are only $15.
I think I'll start a thread on that. |
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10-11-2019, 11:31 AM
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#26 (permalink)
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Corporate imperialist
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Ha, my LiFePO4 60ah starting battery hits 450 amps cranking my diesel while heating the glow plugs.
Maybe I could figure out a way to bypass it for starting.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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10-14-2019, 11:40 PM
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#27 (permalink)
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Administrator
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For those looking for something a bit bigger, they're selling Coda 2.5 kWh 22.4V battery packs...
2.5KWH CODA 24V LIFEPO4 BATTERY MODULE 22.4V 112AH 7S 4C
Well, at least they were until they sold out. But, they said...
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We will have 24v 8s 5.9kWh modules for sale by Friday that will be priced around the same as these. They will also be 8s lifepo4 which will be a perfect 24v powerwall.
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10-15-2019, 12:07 AM
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#28 (permalink)
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Master EcoModder
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Enginer Packs
Daox
What did you do with the cells from you Enginer Battery Packs?
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10-25-2019, 04:21 PM
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#29 (permalink)
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Administrator
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Battery Hookup has their 8Ah pouch cells on sale for $4.50. They are normally $6 each. Crazy good deal. I am thinking about picking some up and I don't even have a project ready for them haha.
Quote:
Originally Posted by TexasCotton
Daox
What did you do with the cells from you Enginer Battery Packs?
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I ended up selling the whole kit to another EcoModder. |
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11-08-2019, 03:47 PM
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#30 (permalink)
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Administrator
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Here is another bigger batter option. It is 24V and ~4.5 kwh. The price seems high at $450, but that is $100/kwh. Lead acid is $80/kwh.
BYD battery
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