Greenergia Electric Bike Battery 52V48V36V 17.5Ah/14Ah/12Ah/10Ah Lithium ion Battery with USB Port and Charger for 250-1500W Motor Ebike Battery

Review of 48 volt rear mount battery rackCons:1. rear mount battery rack does not fit on bike with disc brakes. I manufacture custom bracket to make this fit.2. Bracket attaching below the seat it's not long enough if you have a 30 inch diameter Tire. I manufactured 2 more custom brackets to make this fit3. It could be due to custom brackets, but the battery rack wobbles on rough terrain. Another reason I might recommend the Center Mount batteries.Pros:1. Battery lasts a really long time, really really long, no really, really really long. Ok?Observations: I had half a battery charge left and would hold down full throttle, it sucks the battery voltage down relatively quick all the way down and the motor cuts out momentarily. If you let off the throttle it gives the batteries a chance to catch up, and you still have half a battery charge left.I bought the rear mount battery rack kit and I installed this on a bullseye gravity monster fat bike with 16" tires (tire diameter is closer to 30) and disc brakes. Initially I was worried that the bracket might not fit a fatbike frame, but it does, sort of. The disc brake mechanisms are in the way where the brackets are supposed to mount to the bike frame near the rear spindle. One side has the brake mechanism the other does not, so the bracket mounted fine on the other side. Brackets that mount beneath the seat were not long enough. I am a DIY'er, so I made my own custom brackets. So if you have a bike with disc brakes, and don't want to custom build your own brackets, then opt for the batteries that mount in the center of the frame.Now for the good part. I'm using this battery with a 1000 watt bafang motor. The battery does what it's supposed to, last a long time. Like I said I'm riding a fatbike, so far mostly I am pulling my two-year-old in a carriage behind the bike. Even with the carriage attached for most of the first half of my first battery charge, I have probably gone 15 miles, with stop & start for stop signs and stop lights. That just tells you the tremendous amount of power in this battery pack. Longstreet cruises I highly recommend this battery, off-road I would opt for something mounted to the center of the bike frame to reduce weight and wobbling. I'm typically not going far so I may also buy a water bottle battery.

I purchased the 36v 17.5 amp hour battery. The shipping time was acceptable (prime options didn't make a difference) but the item was packaged very well. The battery itself is being used for an ebike (not my first) and did just as I expected. Having the USB, (which I doubt I'll use as much as I hope to) is a great feature, the built in battery guage is decent enough, and the key slot and charge port cover all are strong and work as they should. This is a premium cost for a battery for this bike setup, but well worth the money I think, as the "kit" is put together well.Now this did come with a "slow" charger, (2.2amps) vs a fast 5v, but honestly the distance this battery gives me makes it so I no longer care about getting a quick charge between locations so I can make it farther. (7-8 hours from empty, according to the manual)Just remember that this is a heavier bike battery, if you aren't going far, I would suggest less amp hours to keep the weight down. But if you need it, it's a great option!Cheers

This power-pack Battery is Awesome! I installed a 1000w rear wheel motor on my Sondors, did a lot of bench testing before I rode on the street, street tested for a couple of hours, up & down hills, battery was still ¾ full. AWESOME BATTERY.

Fit was tight on smaller frame bike but was able to attach it with hose clamps. Power is totally impressive. 32 mph on 1000 watt hub. No problem with big hills, good torque. Only put 5 miles on it battery still full.

The Battery came to Philadelphia Area in about 8 days from order. Was packaged well. Contents include: Battery, mounting bracket, charger, 2x keys for battery mount, and 1 cable to connect to battery charger, that you can connect the positive and negative of your E-bike pretty easily to. Looks sturdy and well built. I took some pictures of the manual in case I, or anyone ever looses the paper version. Have not tested capacity yet, will update review if not as described.

CUSTOMER SERVICE # for Greenergia # 702.576.6881 ...Very true about the disc brakes as one reviewer posted. Also this battery it is very long and doesn't allow you put seat all the way down as you can see in the pictures. And the connectors my not be the same as you have and you may need to rewire. Also you may need to put new holes in your bike frame to fit this rack on and then the extender that attaches below seat my not reach.

Sturdy fits snug and secure so it doesnt rattle while I drive down rough roads. Havent ran it down all the way yet but im estimating 20 mile range got about 10 ish miles before it dropped to half. Only four because i wished the key would also for turning the battery on and off for added security

First 20 miles on new build. 48v 1500w 29er. Held up fairly well, but bit soon to tell. They were very responsive to inquires.Only con's, wished shipping was a bit faster. But I was also impatent.Will update at 100 miles