Ebike Hailong battery 36V/48V for 350W / 500W / 750W / 900W motor fits on Down Tube for VAUN MiFa Prophete Pedelec

It’s actually a good quality battery with all of the safety features that could possibly there be. It’s pretty much everything how they describe it, but one quite important thing they don’t mention in their description, which is actually very useful so will put it here. When you mount a battery holder onto the bike frame, they have have these rubber fittings that will align with your round bar frame, because potentially the battery holder is flat, so if you mounting it on the round frame, you just put those rubber fittings and they sit nicely on your rounded frame and then you put the battery holder on them and tighten it. This way the battery sits solid without wobble to the sides and you don’t have to buy an extra bracket holder that would align with your round frame.

The item was delivered very quickly. Came when they said it would. The battery is well built. Compact. I would recommend buying the battery here.

It is good, I wired it up to a separate controller and it works well, powerful, good range, and the kill switch on the side is a nice addition.

Just as advertised, love it

Bought this to power my ebike conversion with a bafang mid mount motor, and I must say I'm impressed. Yes, it's not cheap but nothing is these days! On my first ride I did 17 miles along a canal towpath... mostly level ground and mixed between peddaling and using the throttle but didn't need to use full power at all. Battery is still at 69% This should get me back and fore to work with a few hills for a few days at least. Well happy with it!

I have been buying from this seller on eBay but get faster delivery from Amazon I have been buying since 2019 and each battery still going as good as when I purchased AWESOME COMES WITH FIRE PROTECTION BMS INSIDE EACH BATTERY

Good

Although this battery seems to have a little longer battery life than my previous one, this does seem to have an issue with charging speeds. I’m going to get a quick charger at some point in the future and hopefully that fixes this issue. A second problem I’ve found with this battery as well as my last one is the mounting plate. The frame holes haven’t lined up on my current frame or my previous two so I had to use zip ties ruining the overall looks of the bike. This battery isn’t the only one I’ve had that had this same problem. My 36v Yose Power also had this issue too. The USB port is relatively slow, 1A is probably being a little optimistic as it doesn’t even provide enough power to keep a bike light charging while in use. It’s still useful though, it’s not uncommon to find yourself running out of battery on your bike lights. Battery sag does seem to be a small issue with this pack, at full throttle under high load conditions, it drops 4-6V. Not sure why this is but it does cause the BMS to cut power at full throttle when you have around 25% remaining. The pack itself can handle around 25 miles on throttle when used at 1,000w. Dropping to 250w limited mode gives you around 30 miles range throttle only. Pedalling can significantly improve the range.