Search found 9 matches

by commanda
Thu, 11 Jun 2009, 13:44
Forum: Batteries, charging, management and monitoring
Topic: Home grown BMS ideas !
Replies: 781
Views: 110196

Home grown BMS ideas !

Hi there, Not been on this forum for a while, so a bit late to the party. I have owned an EVT4000 electric scooter for 2 years. It was converted to Lithium 9 months ago, using 16 * TSLFP40 and a home grown BMS. I did a full write up here; evt 400e lithium conversion thread There is a pdf of the circ...
by commanda
Sat, 30 Aug 2008, 00:40
Forum: EV Motoring
Topic: Electric/AEVA/renewable car stickers
Replies: 17
Views: 2746

Electric/AEVA/renewable car stickers

LiFePO4?

Image
by commanda
Tue, 05 Aug 2008, 23:54
Forum: Batteries, charging, management and monitoring
Topic: Charging ThunderSkys
Replies: 2
Views: 795

Charging ThunderSkys

If you're talking BMS, I'm currently building one similar to this one; http://endless-sphere.com/forums/viewtopic.php?f=14&t=3345&sid=3ef768f1cd9379fa3c7c6912f49d60ff http://endless-sphere.com/forums/viewtopic.php?f=14&t=5416&sid=3ef768f1cd9379fa3c7c6912f49d60ff for my 16 x TSLFP40 for my EVT scoote...
by commanda
Sun, 03 Aug 2008, 14:05
Forum: Batteries, charging, management and monitoring
Topic: **How many amps can a battery put out?**
Replies: 9
Views: 2008

**How many amps can a battery put out?**

antiscab wrote: i now run 19 x 3.2v 40AH lithium cells. i now have a usable energy of 57v x 28.8AH = 1641wh in 30kg. this gives me a range of 40-50km.

Matt


Matt,

Can you explain how the 40AH lithium cells become 28.8AH usable energy?

Amanda
by commanda
Sat, 26 Jul 2008, 13:37
Forum: Electric motors and controllers
Topic: ZEVA controller?
Replies: 21
Views: 2886

ZEVA controller?

zeva wrote: I'd still advise having the BMS able to open the main contactor if any individual cells go below their minimum.....


Of course. Not sure what I was thinking, but it's so obvious when somebody else points it out. Forget I spoke.

Amanda
by commanda
Sat, 26 Jul 2008, 00:25
Forum: Electric motors and controllers
Topic: ZEVA controller?
Replies: 21
Views: 2886

ZEVA controller?

If so have something better for you: Adjustable battery voltage sag limiting. So you can dial up a voltage, and the controller won't let the pack voltage go below this under any circumstances. The advantage is it gives you some warning - as the batteries approach flat, you will get less power out o...
by commanda
Fri, 25 Jul 2008, 13:52
Forum: Electric motors and controllers
Topic: ZEVA controller?
Replies: 21
Views: 2886

ZEVA controller?

Is there an e-brake input? ie: hitting the brake pedal kills the throttle, ala electric assist pushbikes and electric scooters. Reason I ask. The low voltage cutoff on my BMS for my ThunderSky batteries going into my scooter operates the brake line. Would like to use this same BMS on any future car ...
by commanda
Sun, 20 Jul 2008, 14:10
Forum: Batteries, charging, management and monitoring
Topic: Jaycar MB-3612 charger
Replies: 13
Views: 3368

Jaycar MB-3612 charger

You can get these chargers cheaper from Soanarplus https://www.soanarplus.com Same part number. Do not disconnect the mains earth. DO disconnect the output negative from the earth. From memory, on the sister unit (24 volt 6 amp) it's a single green/yellow wire from the pcb to the chassis. I've got a...
by commanda
Sat, 19 Jul 2008, 22:55
Forum: Technical and conversion discussion
Topic: Power steering?
Replies: 6
Views: 2351

Power steering?

Hello all, noobie to this forum. Just perusing cars for sale looking for a candidate for future conversion. If a car had power steering, is it necessary to retain it. If so, how difficult is it. If it can be removed (technically and legally), what's involved?

Amanda