On my way, just picked up a used E-Bike

So my buddy and bike mentor is tired of his Ebike after less than a year and is going full on motors from now on. What Im getting is a 48v 1000 wt front wheel, bms, some sla batteries that are near death, rack etc on a Miyata chassis. Ive riden this bike quite a bit and it has plenty of power and so far reliable.

So. Now the battery. Im thinking about the battery that Golden Motor sells, the 48v 12ah model but purchasing it from San Diego Electric bikes web site. Still need to find out some reviews on their service and shipping. I picked up this electric bike at such a good price Im thinking about starting to put together my ebike about the same time the wifes is completed.

Question on the charging of the above battery. The battery comes with a 2 amp charger and an upgrade to a 4 amp charger. I imagine the upgrade is worth every penny. Also the BMS that's with the bike would need to be replaced??? for something that's set up for LifeP04?

*Just checked Sdelectricbike site and things have changed since last night lol, Looks like they suddenly do not carry Golden Motor batteries now. Weird.

As always any help would be......helpful

Dan.

I think I saw a post from Paul and he was using a 48v 10ah Golden battery with a MP3, and from most of what Ive read that's not enough for a 1000w hub. Heck I don't know lol.

Just checked with a vendor and he can ship me a Ping battery with a high rate bms and I think he said upgraded charger total price 730.00 shipped. Do I need the upgraded BMS? I could get it for a little cheaper through Ping with the upgraded charger and standard BMS.

That vendor also said that the Golden batteries (10 and 12ah) are very hard to repair if something happens. Any thoughts?

So many questions, thanks guys.

Dan.

paul said:

i am not sure about repairing them, i know barleyawake had one apart and set it would be easy to replace a cell, most battery's have a bms built in them, i know the golden motor ones do, my golden motor 48v 10ah battery i have put well over 6,000 miles on the motorized bicycle and battery and zero problems, i am very happy with both of them

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Thanks Paul,
So you did use that 10ah on your mp3 or/and smart pie? I just don't want to shorten the life of these already expensive batteries lol. What charger do you have and how long does it take to charge? Also I assume you have to keep an eye on the battery while charging as not to over charge?

Dan.

Thanks Easy,
I'm a bit iffy on anything but LifeP04 due to stability, although I will readily admit my only knowledge is reading through forums.

How much is bms shipping rates?

Dan.

BarelyAWake said:

I should mention I agree wholeheartedly - it's often quite a bit more cost effective to forgo the kit-supplied batteries & get your own, as mentioned previously bmsbattery.com, pingbattery.com & others are great sources for packs & parts, complete w/cases or DIY, the only "difficult" bit being matching the components & that's really not difficult at all...

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The want to build is there, I just read so many things from so many different people lol. Use this, don't use that, one mistake and boom!

I was just checking this place out. Seems like reasonable pricing and the manufacturer Ive also seen while lurking around. Id like to know which BMS they are using and if the battery comes that way with no enclosure at all. Any good?

http://www.greenbikekit.com/lithium-battery/lifepo4/48v-10ah-headway-38120-battery.html

Easy Rider said:

It ended up costing around $200. Before shipping was $100 through FedEx but now they use TNT shipping and the shipping doubled. Also when ordering a battery, make sure you buy one with a continuous discharge of 30+ amps. I made the mistake of buying one with a 15 amp discharge and it only gets 14 miles per charge.

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Im glad you mentioned continuous discharge of 30+ amps. In all my reading my brain went from continuous to maximum. That would have been a big mistake.

Dan.

EDIT
I think I found a neat article here for the E-bike challenged folk like myself.
http://www.electricbike.com/lithium-battery/