need a battery!
#1
Senior Member
Thread Starter
Join Date: Apr 2005
Location: Ann Arbor, MI
Posts: 16,878
Bikes: 1980 Masi, 1984 Mondonico, 1984 Trek 610, 1980 Woodrup Giro, 2005 Mondonico Futura Leggera ELOS, 1967 PX10E, 1971 Peugeot UO-8
Mentioned: 49 Post(s)
Tagged: 0 Thread(s)
Quoted: 1857 Post(s)
Liked 664 Times
in
506 Posts
need a battery!
I need a cost-effective high capacity battery for a biking project. Need 12 volts, about 20 AH or more. How powerful are some of the bigger bat-light batteries already in the bike world? Where do you get good battery packs cheap?
I'm not new to bikes or electronics, but am new to electronics on bikes, and what's commonly used.
I'm not new to bikes or electronics, but am new to electronics on bikes, and what's commonly used.
#2
Senior Member
Join Date: Jul 2009
Posts: 1,054
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
Clearly, SLAs would be the least expensive, but heaviest and have the least number of recycling charges. What's it needed for, lights or lights and horn? If it's lights, you'd be able to go with something much less substantial with LED lights. LEDs draw little power. Off the top of my head, three good online sources for batteries at reasonable prices include www.batteryspace.com, www.all-battery.com and www.batteryjunction.com. I'm sure there are others out there, too. You'll probably be getting some other recommendations in other replies.
#3
Senior Member
Thread Starter
Join Date: Apr 2005
Location: Ann Arbor, MI
Posts: 16,878
Bikes: 1980 Masi, 1984 Mondonico, 1984 Trek 610, 1980 Woodrup Giro, 2005 Mondonico Futura Leggera ELOS, 1967 PX10E, 1971 Peugeot UO-8
Mentioned: 49 Post(s)
Tagged: 0 Thread(s)
Quoted: 1857 Post(s)
Liked 664 Times
in
506 Posts
Clearly, SLAs would be the least expensive, but heaviest and have the least number of recycling charges. What's it needed for, lights or lights and horn? If it's lights, you'd be able to go with something much less substantial with LED lights. LEDs draw little power. Off the top of my head, three good online sources for batteries at reasonable prices include www.batteryspace.com, www.all-battery.com and www.batteryjunction.com. I'm sure there are others out there, too. You'll probably be getting some other recommendations in other replies.
#4
Señior Member
Join Date: Sep 2005
Location: Michigan
Posts: 13,749
Bikes: Windsor Fens, Giant Seek 0 (2014, Alfine 8 + discs)
Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 446 Post(s)
Likes: 0
Liked 8 Times
in
7 Posts
look for ebike batteries.
https://www.batteryspace.com/e-bikeskitandbatteries.aspx
the good stuff is Lithium Iron Phosphate, but you're talking $300 for 12v/20ah. But you're around $300 even for NiMH. The only way to get 12v@20ah for cheap is lead acid, where you can pick that up for $50.
The most I've seen i a bottle battery is about 5AH, so you'd need 4 of them to hit 20AH. LiFePO4 bottle batteries hit nearly 7AH, but then you're up to > $100 a pack.
https://www.batteryspace.com/e-bikeskitandbatteries.aspx
the good stuff is Lithium Iron Phosphate, but you're talking $300 for 12v/20ah. But you're around $300 even for NiMH. The only way to get 12v@20ah for cheap is lead acid, where you can pick that up for $50.
The most I've seen i a bottle battery is about 5AH, so you'd need 4 of them to hit 20AH. LiFePO4 bottle batteries hit nearly 7AH, but then you're up to > $100 a pack.
__________________
Work: the 8 hours that separates bike rides.
Work: the 8 hours that separates bike rides.
#5
Senior Member
Thread Starter
Join Date: Apr 2005
Location: Ann Arbor, MI
Posts: 16,878
Bikes: 1980 Masi, 1984 Mondonico, 1984 Trek 610, 1980 Woodrup Giro, 2005 Mondonico Futura Leggera ELOS, 1967 PX10E, 1971 Peugeot UO-8
Mentioned: 49 Post(s)
Tagged: 0 Thread(s)
Quoted: 1857 Post(s)
Liked 664 Times
in
506 Posts
Ok, then it's kind of as i was thinking, my requirements are too stringent, because that $$ for a bat is way too much.