list of Retail Batteries - with quick lock/unlock from bike

General Discussion about electric bicycles.

list of Retail Batteries - with quick lock/unlock from bike

Postby The Stig » Fri Oct 09, 2015 2:43 pm

This is a thread for posting and discussing production/retail batteries that can be mounted on bikes and have a locking feature.

Quick lock/unlock also implies that the battery comes with some kind of contacts that automatically engage. eg: sliding contacts.

Image
The names of the battery cases in this pic: Rear rack (left). Silver Fish (right). Frog (below)

A lot of bikes use these batteries and when someone like me is looking for a replacement, this should be the thread to check out. The Frog (AKA "little frog") battery case is a good example so lets start with that one. I search for these batteries with these search terms "frog battery 36v" or 24v, whatever voltage your looking for.

Please post the link to where you can buy them and include pics.
Last edited by The Stig on Wed Jan 20, 2016 2:35 pm, edited 10 times in total. View post history.
User avatar
The Stig
100 kW
100 kW
 
Posts: 1045
Joined: Sat Nov 15, 2008 6:26 pm
Location: Boston

Re: Retail ebike batteries that quick locking/unlock from bi

Postby The Stig » Fri Oct 09, 2015 2:48 pm

Dolphin case
Always a good place to start is em3ev.com
http://em3ev.com/store/index.php?route= ... uct_id=161
Image



Frog Case
Bikes that use this battery: XB 310Li
(post about more relevant bikes and I will add to this list)

Frog packs look like this
Image
Image



So I'm thinking of buying this one, it seemed the best price out of the listings that include brand-name cells, like Samsung INR18650-29E. I find it hard to beleive its actually made in germany, but its coming from germany. anyone know the supposed seller "EnerPower" http://enerdan.de/ ebay ID:harvestmoonglory ?

Here is their listing for 36v frog batteries w/ samsung cells
http://www.ebay.com/itm/251985602818?ha ... quantity=1
(BTW they will accept a lower offer, I tried 235 GBP, but if anyone tries they should go lower!)

UPDATE: After recieving the battery, opening it up and emailing them, turns out these are still potentially quality cells: Sanyo/Panasonic NCR18650BL. I found the tiny markings on the cells Similar to the pics here (includes specs): http://www.candlepowerforums.com/vb/sho ... -%28Red%29

PS: the mounting bracket is the newer reinforced type.
Last edited by The Stig on Wed Jan 20, 2016 2:37 pm, edited 8 times in total. View post history.
User avatar
The Stig
100 kW
100 kW
 
Posts: 1045
Joined: Sat Nov 15, 2008 6:26 pm
Location: Boston

Re: "Frog" Battery Pack reviews (AKA Little frog battery cas

Postby d8veh » Fri Oct 09, 2015 7:46 pm

It wouldn't surprise me if they're slling Chinese stuff. The case will almost certainly have come from China. They might have made their own cell-pack to go in it. The cells come fom wherever Samsung make them and the BMS could be Chinese or self-made. At least you should get some sort of backup if you need it.
d8veh
100 GW
100 GW
 
Posts: 5418
Joined: Fri Dec 10, 2010 10:45 am
Location: Telford

Re: "Frog" Battery Pack reviews (AKA Little frog battery cas

Postby The Stig » Thu Oct 22, 2015 5:05 pm

Yeah I'm thinking thats probably what they have done. still if its assembled in germany, thats crazy! What do you mean backup... carry an extra battery around??
User avatar
The Stig
100 kW
100 kW
 
Posts: 1045
Joined: Sat Nov 15, 2008 6:26 pm
Location: Boston

Re: "Frog" Battery Pack reviews (AKA Little frog battery cas

Postby d8veh » Fri Oct 23, 2015 9:13 am

No, in case that's not a joke, I mean that you have someone who you can call, and who should take your complaint seriously.

While I think about it,let me tell you about the mounting bracket that attaches to the bike. They crack due to the cantilever force tearing the bracket at a weak point. Some of the better suppliers have added a reinforcement plate to it to stop it from cracking, but others haven't. You won't know which one you get until it's too late unless the supplier knows about it, which he/she probably doesn't. Here's a vracked one:

Image
d8veh
100 GW
100 GW
 
Posts: 5418
Joined: Fri Dec 10, 2010 10:45 am
Location: Telford

Re: "Frog" Battery Pack reviews (AKA Little frog battery cas

Postby The Stig » Fri Oct 23, 2015 10:35 am

In this case im buying from ebay so i have 60 days to leave feedback. Everytime i threaten leaving bad feedback people seem to start cooperating.

Thats true about the brackets, right now i have one of the old ones on the bike. i had it welded across the upper gap, so its tough as nails now. Ive seen the newer reinforced ones... so not all new ones are like that? When was the one pictured bought. Id be surprised not all the new ones are reinforced...
User avatar
The Stig
100 kW
100 kW
 
Posts: 1045
Joined: Sat Nov 15, 2008 6:26 pm
Location: Boston

Re: "Frog" Battery Pack reviews (AKA Little frog battery cas

Postby The Stig » Tue Oct 27, 2015 10:28 pm

The new battery arrived today from here! the good news is my mounting bracket seems to be reinforced.

The bad news is, I cant tell if the cells are real samsung INR 18650-29E, I find it suspicious that the markings would all be facing away from me, all the other sides of the pack are more difficult to open. is it possible to tell if the cells are real by looking at pics 3 and 4? Heres the sequence of pics of how i got to the cells.

EDIT: Turns out these are still potentially quality cells: Sanyo/Panasonic NCR18650BL. I found the tiny marking on the cells after I had posted this.
Specs: http://www.candlepowerforums.com/vb/sho ... -%28Red%29

1.Image
2.Image
3.Image
4.Image
Last edited by The Stig on Thu Oct 29, 2015 10:05 am, edited 2 times in total. View post history.
User avatar
The Stig
100 kW
100 kW
 
Posts: 1045
Joined: Sat Nov 15, 2008 6:26 pm
Location: Boston

Re: "Frog" battery pack REVIEWS (AKA Little frog battery cas

Postby The Stig » Wed Oct 28, 2015 7:14 am

It certainly seems my red cells are not real samsungs, judging by the color cells and potential lack of markings. I'm happy to go through the trouble of nailing bad sellers on ebay since i think ebay would ultimately protect me. I just have to think about how best to approach the seller.

Image
User avatar
The Stig
100 kW
100 kW
 
Posts: 1045
Joined: Sat Nov 15, 2008 6:26 pm
Location: Boston

Re: "Frog" battery pack REVIEWS (AKA Little frog battery cas

Postby The Stig » Thu Oct 29, 2015 10:03 am

Turns out they miss-labled the battery and gave me one with sanyo NCR18650BL cells, which are maybe lower cycle life, higher capacity and higher C-rate, Specs in the link below. So I will keep the battery instead of returning it.

My cells do indeed have small labels on them. "D"s and a QR code is visible. similar to in the pictures here:
http://www.candlepowerforums.com/vb/sho ... -%28Red%29
Last edited by The Stig on Thu Oct 29, 2015 10:04 am, edited 1 time in total. View post history.
User avatar
The Stig
100 kW
100 kW
 
Posts: 1045
Joined: Sat Nov 15, 2008 6:26 pm
Location: Boston

Re: Retail ebike batteries that quick locking/unlock from bi

Postby The Stig » Mon Dec 07, 2015 5:26 pm

Heres a good trick for tightening these nuts & screws without taking the mounting bracket off the seatpost!

just stick a small screwdriver in as shown in the pic below, this works with philips screw heads. press inwards, along the axis of the scredriver.

Image

The battery seems to be doing well, just some screws in the mounting bracket came loose. I may not have tightened them enough when i first installed the battery. i HAD fully engaged the nylon in the nylock nut. I think these loose screws contributed to the mount bending a little bit, i dont think the bend will be too bad going forward.

Now i put thread locker everywhere, as should be done with low quality (ehem, chinese) parts. and almost all bike parts?
Last edited by The Stig on Mon Dec 07, 2015 5:31 pm, edited 1 time in total. View post history.
User avatar
The Stig
100 kW
100 kW
 
Posts: 1045
Joined: Sat Nov 15, 2008 6:26 pm
Location: Boston

Re: list of Retail Batteries - with quick lock/unlock from b

Postby The Stig » Wed Jan 20, 2016 2:46 pm

Last edited by The Stig on Wed Jan 20, 2016 2:47 pm, edited 1 time in total. View post history.
User avatar
The Stig
100 kW
100 kW
 
Posts: 1045
Joined: Sat Nov 15, 2008 6:26 pm
Location: Boston


Return to E-Bike General Discussion

Who is online

Users browsing this forum: Dauntless and 11 guests