3 * 12v/7.2Ah for an amped kit?

[Gluemess]

soI'm pretty noob at this and could use some help, I have these batterys
(http://www.csb-battery.com/english/01_product/02_detail.php?fid=5&pid=11)

and would like to know if I put enough of them together if they could sufficiantly power either a 46v 1000watt motor
(http://www.ebay.com/itm/Rear-48V-1000W-26-Hub-Wheel-Electric-Bicycle-Motor-Kit-Cycling-Conversion-EBike/331067083456?rt=nc&_trksid=p2047675.m1851&_trkparms=aid%3D222002%26algo%3DSIC.FIT%26ao%3D1%26asc%3D18239%26meid%3D2749688773747643773%26pid%3D100005%26prg%3D8344%26rk%3D5%26rkt%3D5%26sd%3D331066606769%26) or (http://www.frugah.com/26-Rear-Wheel-48V-1000W-Battery-Powered-Motor-Kit-p/b4-0076.htm)
or the amped bikes direct drive brute 750/500watt 36V
(http://www.ampedbikes.com/kits.html)

for about twenty miles or so, I weigh 155lbs and live in texas with no hilly terrain whatsoever, my bike is a 26inch steel fork mountain/road bike, about 5 inches of space between the rear forks.

also a big worry is if the batteries work, they weigh a little over 5 LBs each...

thank you, will post any pictures requested

 

[wineboyrider]

Sure they'll work, but you are going to need more amp hours than that for those heavy sla's to work long.

 

[Gluemess]

Sure they'll work, but you are going to need more amp hours than that for those heavy sla's to work long.

so what would be the best way to go here, if I hook up 4 of these in parallel, it will be a 22Lb battery block running at 46volts but the amp hours would still stay at 7.2 right?

if this isnt the best way to go, whats the most price efficient battery to power the 1000w or 750w motor for 20 miles?

also which of the motor kits I listed do you think would be optimal?

 

[wesnewell]

IIRC I got 6-8 miles out of a 48V 500W motor using 4 of those batteries riding at only 12-13mph with no pedaling. The pack weighed 22lbs. I weighed about 270lbs. I got more distance from a 3lb 5ah rc lipo pack. If do decide to use sla batteries, make sure you recharge them immediately, if not sooner after every ride or they will die on you fast. You'll get ~25% more distance from a 48V pack than a 36V pack at the same speed. Do not discharge them lower than the default LVC of them controller, which should be 42V for a 48V system and 31V for a 36V system or you will shorten their life cycles. And I wouldn't count on them lasting the claimed 260 cycles either unless you take exceptional care of them. I switched to rc lipo after 1 week of using the sla batteries. 10ah of 12s rc lipo will get you about 20 miles at 20mph.

 

[wesnewell]

so what would be the best way to go here, if I hook up 4 of these in parallel, it will be a 22Lb battery block running at 46volts but the amp hours would still stay at 7.2 right?

4 in parallel would still be 12V at 28.8ah. 4 in series would be 48V at 7.2ah.

 

[Gluemess]

so what would be the best way to go here, if I hook up 4 of these in parallel, it will be a 22Lb battery block running at 46volts but the amp hours would still stay at 7.2 right?

4 in parallel would still be 12V at 28.8ah. 4 in series would be 48V at 7.2ah.

thank you for your reply
so if I had 4 in parallel would it run better then in the scenario you described earlier? also which motor kit do you think I should get?

 

[wesnewell]

Welcome to ES****Do this before your first post or now (it's retroactive)*****
Please go to the User Control Panel, select Profile, and then enter your city, state/province, and country into the Location field (country minimum) and save it. This will help people help you. Example: Wylie, TX, USA. or just USA, but country as a minimum. Without knowing what country you are in it's hard to make any recommendations. Thank you.

 

[Gluemess]

Alright, so what do you think about something like this?
http://www.csb-battery.com/english/01_product/02_detail.php?fid=13&pid=85
or
http://www.csb-battery.com/english/01_product/02_detail.php?fid=6&pid=25

would it be like 1200watts = 100Ah * 12V?



Constant Current Discharge Characteristics Unit:Amperes (25°C,77°F)
F.V/Time 5MIN 10MIN 15MIN 30MIN 60MIN 90MIN 2HR 3HR 5HR 8HR 10HR 20HR
1.60V 423.00 277.00 212.00 127.00 73.00 52.10 41.10 29.10 18.90 12.20 10.00 5.27
1.67V 375.00 266.00 207.00 125.00 72.40 51.70 40.70 29.00 18.80 12.10 9.93 5.22
1.70V 355.00 258.00 203.00 124.00 71.80 51.40 40.60 28.70 18.60 12.00 9.88 5.20
1.75V 317.00 240.00 194.00 120.00 71.10 50.90 40.20 28.60 18.50 11.90 9.81 5.19
1.80V 283.00 219.00 183.00 115.00 68.90 49.60 39.30 27.90 18.20 11.80 9.66 5.09
1.85V 245.00 196.00 164.00 106.00 65.20 47.20 37.60 26.80 17.40 11.40 9.45 4.92
Constant Power Discharge Characteristics Unit:Watts (25°C,77°F)
F.V/Time 5MIN 10MIN 15MIN 30MIN 60MIN 90MIN 2HR 3HR 5HR 8HR 10HR 20HR
1.60V 4159.00 2950.00 2331.00 1436.00 849.00 610.00 482.00 342.00 223.00 153.00 125.00 63.50
1.67V 4008.00 2837.00 2273.00 1417.00 843.00 607.00 480.00 340.00 222.00 152.00 124.00 63.30
1.70V 3863.00 2772.00 2252.00 1404.00 840.00 604.00 478.00 339.00 221.00 151.00 123.00 63.20
1.75V 3572.00 2623.00 2181.00 1372.00 830.00 599.00 475.00 337.00 220.00 150.00 122.00 62.40
1.80V 3184.00 2442.00 2049.00 1316.00 809.00 585.00 465.00 331.00 217.00 148.00 121.00 61.40
1.85V 2769.00 2227.00 1856.00 1234.00 767.00 557.00 444.00 320.00 210.00 142.00 117.00 60.00

 

[wineboyrider]

Remember that there are also lot's of safety precautions for rc lipo. There are lifepo4 plug and play batteries that work great and are plug and play with a BMS. like pingbattery.com

 

[dogman dan]

I would recommend this one, if you have a short enough ride to do it with lead.

http://www.csb-battery.com/english/01_product/02_detail.php?fid=4&pid=45

A 12v 12 ah battery is still small enough to carry. Three of them, series connected for 36v 12 ah. You will have about 5 miles of usable range. You can go farther, but doing so will quickly ruin them. This will still weigh about 30 pounds!!!!

 

[wesnewell]

If my only option was lead, I wouldn't even put a motor on the bike. Yeah, I used it for about a week, but that was just because I already had 4 sla batteries I pulled from my ups's to try a motor. I never had the intention of using lead permanently. Just as a trial to see if wanted to go electric. Anything more than 4 of the 7ah batteries will be too much to handle imo. Even the 4 7ah batteries is 22lbs and makes the bike handle like crap on a rear rack at slow speeds. They are cheap though, so if you only need a 5 mile range you can get 4 of them for $60 shipped. I wouldn't use anything but rc lipo now. That's what I've been using for the last 3 years. It's simple, it's light, and its easy to manage if you have half a brain. A 3lb 12s lipo pack will have more range than a 22lb 48V sla pack and will last longer, have less sag and only cost ~$75. You will need an RC charger for it, but that's a one time cost.
I bought my motor kit here. They're out of 48V 1000W kits, but they have the 48V 500W kit for about $235 shipped to your door from within the US. The 48V 1000W kit is ~$285 when they get it back in stock and the price hasn't gone up.
http://www.ebay.com/itm/Rear-Wheel-Electric-Bicycle-Conversion-Kit-24V-36V-48V-250W-500W-700W-800W-1000W-/290754592384

 

[dogman dan]

I agree, one week of lead had me sending money to china for lifepo4. But for some on very tight budgets, it can work ok if the ride is that short.

But rides that short are pretty easy to just pedal in most cases.

 

[Gluemess]

thank you guys so much for enlightening me, wheres a cheepest place to buy a 12s or 24s rc lipo?

 

[wesnewell]

USA warehouse of hobbyking.com. When you find what you want, wait a few minutes for the discount price to pop up.

 

[Gluemess]

I am still confused on what "24s" means is that the voltage or... also whats the difference between lipo and lifepo4 and whatnot, also would a 10a 24v battery even be able to run a 1000w motor 20 miles at 20mph?

 

[michaelkramer11]

What part of Texas are you in?

There are tons of threads on the different battery types and the dangers and benefits of each chemistry: http://endless-sphere.com/forums/viewtopic.php?f=14&t=26621


I got my ebike going a few months ago and I imagine I'll have one for the rest of my life. They are awesome.

 

[wesnewell]

24s means 24 cells in series. 88.8V nominal and 100.8V fully charged for rc lipo.
http://batteryuniversity.com/learn/article/types_of_lithium_ion
http://www.rchelicopterfun.com/rc-lipo-batteries.html
http://scriptasylum.com/rc_speed/lipo.html
Read the above.

 

[dogman dan]

The most easy configuration for an amped kit will be 12s. So get either 6s packs, or 4s packs, in at least 5 ah size. 5 ah = 5000 mha.

a 5 ah pack will definitely get you 4 miles of range while still taking it very easy on the pack, and if you slow down double that. If you buy enough for a 10 ah pack you have enough to go 10 miles riding as fast as you can. four 6s 5ah packs, or six of the 4s packs will make a 10 ah pack, if you buy the 5 ah size.

The cheapest is usually the 20c discharge rate 4s hardcase packs, in the zippy brand.

12s makes a 44v pack, so the 36v controllers in kits can handle it fine.