#garfield Logs

Aug 26 2013

21:08 any92572396 Which is better to plug in and draw 3amps from as long as i want?
21:08 any92572396 http://www.ebay.com/itm/280797211775
21:08 any92572396 http://www.ebay.com/itm/270991257387
21:14 any92572396 .
21:38 rue_house hey
21:38 any92572396 yeh
21:39 any92572396 which is better? the 19v one, or the 19v one?
21:39 rue_house I wouldn't reccoment pushing tham at more than 80% rating... wait... make that 50% continiously
21:39 any92572396 o
21:39 any92572396 i got a 5v 3amp, it burned up in 10 minytes at 2.5amps
21:39 rue_house neither ship to canada :)
21:39 any92572396 i ship to Canadaia
21:39 rue_house cool to know
21:40 rue_house I bought a 4.9Ah li-ion battery, which had 1.3Ah capacity
21:40 any92572396 so all i can do is buy both and see which one works?
21:41 rue_house my bets are on "same"
21:41 any92572396 one is cheaper
21:41 rue_house http://eds.dyndns.org/~ircjunk/projects/EVtruck/batteries/main.html
21:41 any92572396 no, the other one is cheaper
21:42 any92572396 4.9ahr in a AA cell?
21:43 any92572396 Rechargeable times: Up to 500 times. <<== 1.5 yrs of drivetime on a $$$$$ battery pack?
21:44 rue_house the 18650 is 18mm by 65mm
21:44 rue_house ;)
21:44 rue_house actually, 500 cycles is about 4 or 5 years for me
21:51 any92572396 going to be pricey to buy all versions of Lion and test them all?
22:00 any92572396 i heard rebuilt Prius batteries are $1500
22:10 rue_house I dont need to
22:11 rue_house http://lygte-info.dk/review/batteries2012/Common18650comparator.php
22:11 rue_house seems this guy did most of them alreayd
22:12 any92572396 but only for that one battery number
22:13 any92572396 and he rated all of them as BAD
22:21 rue_shop2 yea, well
22:22 rue_shop2 18650 is a li-ion package size
22:22 y92572396 lis
22:22 rue_shop2 http://en.wikipedia.org/wiki/List_of_battery_sizes
22:22 rue_shop2 veeeeery bottom
22:23 any92572396 but the guy's page still says all 18650 cells are BAD
22:23 any92572396 they do not meet specs
22:26 rue_shop2 not hte cell sieze, just those manufacturers
22:26 rue_shop2 of that battery type
22:26 any92572396 o
22:27 rue_shop2 iirc, there are a few that he listed as good somewhere, and they aren't the cheap ones that you see listed there
22:27 any92572396 so how much will enough AA cells cost, and how much will they weigh?
22:31 rue_shop2 part of the reason I bought and tested the ones I did was to find out how much they actually weighed
22:32 rue_shop2 by my equipment, they are about 4g
22:36 any92572396 4 grams isn't much of a battery pack to run a truck on
22:46 rue_shop2 iirc I was looking at x 1200 cells
22:46 rue_shop2 12kWh
22:47 rue_shop2 not sure how to go about that one right now
22:47 rue_shop2 I suppose I should get a batch of the motors I'm thinking of using and see how they turn otu
22:48 any92572396 those cells make 10whr each??
22:54 rue_shop2 those turned out to be 1.3Ah, so about 1.9Wh
22:56 any92572396 is it 12kwh over 1 hour? 2 hours? because the 20 hour figure is rather useless
22:57 any92572396 12kwh = 16hp-hrs
22:58 any92572396 if you need 30hp to carry 500lbs of firewood up the hill, and it takes 15 minutes to do so, you have only 15 minutes of power left, at best
23:11 rue_shop2 the bosses new elevtric car is 24Kwh, has a 160km range
23:11 rue_shop2 80km will do me ok
23:11 rue_shop2 there, is a number, kwh/km
23:11 rue_shop2 its quite surprisingly low
23:12 rue_shop2 150Wh/km, sounds about right