Looking for a cheap, lightweight 48v battery set-up.

[Rifle]

I'm looking for a cheap (under $200) lightweight 48v battery to slap on the bike (or maybe my back) for serious mountain biking. Don't need more than 7 hilly miles of range. I had been thinking going with a Bosch Fatpack but then I realized I'd want the extra power 48v will provide. Would be nice if it was something I could receive quickly since it's going to be 2 months until I receive my hefty 32lbs 48v 20ah pack from cammy cc. If only cammy made a 48v 5ah battery it'd fit this need very nicely (except for being able to receive quickly). I think it'd be great to ride 20 miles to a trail, hide the 32 pounder in the woods, fly around the trail, and still be able to ride home.

 

[Hyena]

2 of THESE zippy 6S lipos will give you 48v. They're the best light weight solution, especially if you want to use it for offroading as they'll deliver much higher current than the other types of 5ah packs you're looking at.

 

[dogman dan]

I'm looking for a cheap, unwrecked, late model prius. Seriously, though, lipoly RC packs are the only option besides a homebuilt pack from scavenged tool batteries. Cozy up to the local recycler if you live in a big enough city.

 

[bumper]

Hate to hijack this thread, BUT...

I'm looking for a 36V pack with mAH between 12 and 20. I am running a GM motor with a 36V ebikes.ca nicad at 8mAH. It is good on flats, but on hills it cuts out. I'm interested in the RC packs, but don't know i don't see the voltage on them. What's the conversion? The one shown above is 5000mAH?!?

Like the OP, I'd like something cheap & lightweight.

Thanks.

 

[Russell]

Hate to hijack this thread, BUT...

I'm looking for a 36V pack with mAH between 12 and 20. I am running a GM motor with a 36V ebikes.ca nicad at 8mAH. It is good on flats, but on hills it cuts out. I'm interested in the RC packs, but don't know i don't see the voltage on them. What's the conversion? The one shown above is 5000mAH?!?

Like the OP, I'd like something cheap & lightweight.

Thanks.

The capacity of most RC LiPo batteries are quoted in milli-Amp-hours which means 5000mAh is equivalent to 5Ah. The RC LiPo’s are constructed using lithium-polymer pouches which are nominally 3.7V (4.2V fully charged). They are most often constructed as series packs of 2, 3, 4, 5, 6 and 10 so the voltages are 7.4, 11.1, 14.8, 18.5, 22.2 and 37.0, respectively.

-R

 

[nathan_jones]

2 of THESE zippy 6S lipos will give you 48v. They're the best light weight solution, especially if you want to use it for offroading as they'll deliver much higher current than the other types of 5ah packs you're looking at.

looking at the wires other that the power cables dont they require a bms? and what charge would one need to use?

 

[swbluto]

Here's the kicker - liPo batteries need a charger and they are NOT cheap. But, if you consider this as a relatively long-term hobby, proper care will make it one of the best solutions especially if you use it less than 2-3 times a week.

Do you know what kind of system you're powering, btw?