Description
Now with 1 year USA warranty including parts and labor*.
Free Shipping (within continental US by ground only)
Brand new. BMS, 2A.5 charger fast ship 2-8 day delivery
- New! Rechargeable Electric Bicycle Batteries 52V 20AH Lithium Ion Battery
- 1. These batteries have a charge status led
- 2. Heavy duty 2.5 Amp charger
- 3. Bike mount kit
- 4. Spare anderson power pole connector cable
- 5. 2.5C BMS which can output V 48V 20A for 1 hour or 40a for 25 min
- 6. USB phone charger
- 7. On/Off switch
US seller. These are the similar 21700 Panasonic cell based batteries. We ship from US so you don’t have to wait for 6 week shipping. Use it for ebike, scooter etrikes. Battery has 2.5C BMS and can support 2500w motor. Look at my feedback I am now top seller of 48/52v lithium ebike batteries on ebay. We ship promptly so you should get your batteries in 3 to 10 days of ordering.
Achtung Alert Warning Caution: I have 10 in stock but many times some people buy in bulk leaving me no stock. Please contact me directly at http://www.calibike.com/?page_id=39 to check on immediate availability if you need the battery in a hurry
See the attached pics of 3 step test of each battery.
1. check each battery voltage
2. Check power supply voltage
3. Battery max power run on my Battery load tester
The batteries are made for http://www.calibike.com/
I have sold over 1000 batteries with very happy customers
In fact I am the #1 US seller of Lithium ion batteries on ebay
Type: Li-Ion
Brand Name: Panasonic
Type: 21700 cells (same as laptop batteries)
Rating: 2.5C (Can support 2500 watt motor)
Voltage: 52V
Size: (6.5″ x 3.6″ x 14.40″)
Nominal Capacity: 20AH
Weight: 4.50KG (9.90 lbs)
Cycles >> 800
Model Number: 52V20AH
Includes 110v 2a charger
Easy to install replace your lead acid clunker.
| Battery Model | 48V20 |
| Voltage (V) | 48 |
| Capacity: | 20AH |
| Type: | Li-Ion 21700 cells |
| Brand Name: | Panasonic |
| BMS Rating: | 2.5C |
| Size: | Dolphin case 5.5″ x 3.6″ x 14.4″ |
| Weight: | 4.5.0 KG (9.9 lbs) |
| Cycles | 800++ |
| Charger | 110V/220V in 52v 2AH out |
| Source Resistance | < 40 (mO) |
| Cell Combination | 13S4P |
| Cell Quantity (parallel*series) | 13*4 |
| Discharge Cutoff Voltage | 39.6V |
| Charge Cutoff Voltage | 54.4V |
| Rated Discharge Current | 40A |
| Instantaneous Maximum Discharge Current | 50A |
| Maximum Continuous Discharge Current | 40A |
| Maximum Continuous Charge Current | 5A |
| Charge Mode | CC-CV |
| Standard Charge Current | 2A |
| Charge Time Standard Charge Current | 4.5 Hrs |
| Fast Charge Current | 5A |
| Charge Time under Fast Charge Current | 3 hours |
| Charge Temperature Range | -20C -55C |
| Discharge Temperature Range | -20C -55C |
Package Content
1 x 48V20 Battery in Calibike case
1 x 48v2.5A charger
1 x Spare power cable with Anderson connector
Model Number: 48V20 Includes 110v 2.5a charger
Easy to install replace your lead acid clunker.
Read a battery review at
Battery: By the time I got back to starting point total distance was 24.7 miles. Display still showed all full bars except the half bar that is at the right side of the icon (961 display) When I got home, the battery took 1 1/2 hrs to fully recharge. I estimate the battery was about 25% depleted with 75% left to cutoff voltage.
Read technical report on Calibike 48v15 battery road test with real time Amps and speed
Calibike races eskateboard, cars, and road bike in the streets of San Francisco
Lombard street 20% grade hill climb
Powell street 20% grade racing with audi
Night ride cruise at 30 35 mph (Using Midnite Sun headlights)
US 105E freeway
11 Mile run faster than car in urban traffic
30c3 fully instrumented ride includes real time Speed, Volts, Amps and Watts
33c3 ebike goes to Superbowl
Plain English USA Warranty
Warranty includes all parts and labor for a period of 1 year from date of purchase.
Warranty excludes shipping charges.
Warranty excludes battery abuse.
Legalese tripe: The batteries, kits and ebikes sold are experimental. There is some risk of accident and fire. By purchasing this kit(s) you acknowledge the risk and agree to hold Calibike harmless in case of any adverse circumstances.
Richard Blystone –
This is the best battery you can buy for 48v. Mine has been nothing short of amazing. I left a review a while ago saying about my powered on off button going out, which was well past warranty, and they offered to replace it free of charge of I pay shipping fees, or they would send me the button for shipping price. My bike is my every day commute, so I didn’t have time to wait. Well they didn’t stop there….they told me how to replace it with a switch I got myself, step by step. Now, I have owned this battery for about 5 years and it still doesn’t skip a beat. Outstanding. And still to this day, if I have any questions,I contact the amazing Rafe. These guys deserve 10 ⭐’s
Joshua –
I purchased a battery before I had a bike and they helped me find one that fit it. The BMS in the battery gets messed up after the warranty is up and they still guide me through fixing the issue. Amazing support beyond what I would expect from anyone.
Peter Stewart –
Great customer support after purchase of defective battery pack….
Richard Blystone –
This battery has been nothing short of amazing. Only issue I am having is with the power button. It seems to be maybe “going out”? As it is hard sometimes to get it to stay pressed in
Michael Ramirez (verified owner) –
I received the battery and motor kit and installed it with some hardships involved, Had to retrofit a few parts on my bicycle, but what can you expect from an E-bike Kit? It had to happen.
Anyways, I put about 1,500 Miles on the kit already in 2 months and I have nothing but praise. My biggest complaint is that there is no programming manual for the controller to mess with the settings on it such as power output, battery cutoff voltage and other configurations. It’s all preset automatically. I received a battery that I ordered (48V 20A) It works wonders, i am able to achieve about 30-31mph on flats on a full charge and sometimes 34-35 if i am pedaling vigorously! The battery, however one of the buttons for the pack that is responsible for controlling the light functions that connect to the outlet never worked and I contacted him a few times to either replace the battery pack or send me a kit to repair the button; but he never followed through after two months of contacting him. I only have praise for how wonderful this kit is, but the biggest takeaway is that faulty button on the pack and the customer service which has me a little upset. I sent him a few e-mails regarding the specifications and how to work with the controller and he as well failed to respond to my inquiries. Fantastic product, but the customer service definitely is a bit lacking.
ELF Rider (verified owner) –
I own 3 of these. Love ’em. Bought the first because work is 18 miles away from home. I ride an ELF from Organic Transport and the 15AH battery that comes with it is more than adequate in the MN summer but not in winter. Was changing batteries half way there. Bought a 15AH replacement from Rafe and loved it, but physics still rules. Went back for a second and he was out of the 15AH but suggested that I give one of these a try. Now I can make it to work on one battery even at 10 degrees F. Fits nicely in the battery holder. Comes with two small Anderson connectors on the battery AND a black and red Anderson connector already attached to 12 G wires so I could make an adapter to the large Anderson connector the ELF uses. Has an on/off switch that I have to tape in the “on” position given the battery holder I am putting the battery into
The one problem is that on one unit, one of the Velcro straps that are designed to attach the battery to a regular bicycle frame has torn off. This is from carrying the battery into the house to charge it up and carrying it only by that strap. I would advise others to carry it with two straps at least.
It does come with a battery charger for when the solar cell on the ELF can’t recharge it fully in the feeble light of a MN Fall and Winter. These have one problem as well: the fan has ended up making a lot of noise. I returned one to Rafe within a year and got a prompt replacement.
Rafe has always been prompt to respond to emails and ship product. When the above things happened, he made them right immediately. I highly recommend this business and their products.