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52v Pansonic 11.5ah or 13.5ah Dolphin

$30.00 (Fixed shipping cost)

Product Description

  • 52v for maximum performance out of most 48 volt systems
  • On-Off Switch
  • USB Charger for your phone etc  built into pack
  • 4 light battery meter built into pack
  • Quick release with key  lock 
  • Hard plastic to protect your pack
  • 52v means high voltage for even more power with the same 48v controller and motor (read more)
  • Up to 700-watt hours means incredible range in small package  (read article on watt hours)
  • 14s4p = 56 Genuine  name brand grade a Panasonic 18650 cells (see breakdown on 18650 cells)
  • 30amp continuous 70amp maximum BMS
  • Weight of Battery: 7.5 pounds
  • Life Span: 400-1000 charges



This is a 52v battery designed to squeeze more power out of your stock 48 volt system without having to change your controller or motor. To get more information read our article on 52 volt batteries. 

Not only does the 52v battery give you more power it also gives you more range than a comparable amp hour 48 volt battery.  (read our story on calculating range)

We took the best Japanese cells on the market for energy density and stuffed them into this little case to pack incredible range and still keep your ebike lightweight and stealth looking. 

Ultimate Long Range in a very small size

We designed these packs using a common ebike case, but filled them with quality name brand 18650 cells utilizing the latest battery chemistry to get the highest possible power density. This means despite these packs small size and light weight, they will get you tons and tons of range. These packs have more amp hours than any commercial ebike, who skimp and use generic cells which are known for being low power density and short battery life.  In fact we so disbelieve in generic cells, we are not even offering them as an option. We only offer quality cells in our packs not cheap no name cells like almost everyone else does.

Cell Choice

This pack is crammed full of the highest quality cells in the industry. 56 cells is a 14s4p configuration. That means 4 rows of  14 to give you the voltage and amp hour you need. Depending on the cell you choose you will have 11.6 or 13.5ah which means the amount of range you will get.

Here are your cell choices:

Panasonic GA - 14 ah is the highest energy density available in an 18650 cell and this is one of the most expensive and most respected 18650s on the market. 

Panasonic PF - This cell is an excellent choice if you are running a high power drive such as the BBHD-1000w Bafang drive, or any high amperage system. This cell will easily put out 30amps continuous.  The cell is not the same energy density as the NCR B 3400 so you will sacrifice a little range. 

Read more about 18650 cell choice here: (breakdown on 18650 cells)



Regarding Amps: These packs will easily put out 30amps (1500 watts) and even more for short bursts. If your kit can handle 52 volts, and is 30amps or less these are ideal packs for you.

Do not worry about the high amps of this battery burning out your controller...the controller will only take the amps it needs.  Do not accept BS from other manufacturers that ebike batteries are different. As long as the voltage matches this battery will work with any commercial ebike or kit. 

Regarding voltage: 

You cannot fry a controller by selecting a battery with too many amps. Voltage however, you need to be careful with.  If you want to be extra safe if you are running a 48 volt system go with a 48 battery and do not try to get the extra power the 52 volts will get you. But more than likely your 48 volt system will easily handle a 52 volt battery.

This is a 14s (52 volt) battery. This means that with the same controller you will get more power from the same amps. Fun...however make sure your controller can handle up to 60 volts...which is what a 52-volt battery puts out when fully  charged, otherwise you can fry your controller. 

Most DIY controllers have a range of volts they will accept...and most descent 48-volt controllers can handle 52 volts...but this is something you must verify about your controller before ordering this battery.  And more than likely the only way to really know is to test with a 52 volt battery.

All the 48v kits and controller Luna cycles sales are compatible with our 52 volt batteries.


Regarding Battery Gauge:

One draw back of running a 52 volt battery on a 48 volt system, is the cheap battery handlebar gauge that comes with your kit or ebike will not be as accurate (and they are usually not very accurate to start with). To solve this you could invest in a cycle analyst or watt meter which will give you a completely accurate battery gauge. The battery gauge built onto the battery will still be fairly accurate so you can just use that, just you will not have a handlebar mounted battery gauge (no big deal).   Due to how voltage sag works with lithium the gauge built onto the battery may show almost full until you reach about 40% capacity.



Most people mount this battery to the downtube of their frame (where the water bottle usually goes) but its very versatile where it can be mounted. Because it is so lightweight (7.5  pounds) it can be used in a backpack.

It even fits easily in one of our triangle bags

Because of its hard plastic enclosure you don't need to worry about padding this battery like you would on one of our shrink wrapped batteries. 

This is a very easy to mount battery. It has a mounting bracket that will mount to most water bottle screw holes in the frame. If not you can drill threaded holes into your frame to accommodate it. Or you can use zipties etc.  Once the bracket is installed it's a breeze to take the battery on and off....So you can have extra batteries that you carry on your ride that would easily fit in a backpack or on the racks on your bike. 

(Read our article on mounting an ebike battery for more information).

Extra Features

 This pack has  a lot of niceties to add to its usability. These features include:

  • USB charger can charge your cell phone for weeks (biggest battery bank charger ever) (please note this is an extra and we cannot support repair/replacement of usb module)
  • Solid plastic enclosure to protect your cells from being banged up
  • Water resistance can handle riding in the rain
  • Lighted on/off switch
  • Lighted battery gauge on the battery lets you know how much charge you have left
  • convenient charge port
  • Quick release so you can easily take on and off your bike
  • Key locks securely locks the mount to your bike
  • Versatile mount that can be screwed or zip tied to your bike.

Installation and documentation

Luna Hardcase Battery FAQ


Support notes


If ordering a battery to overseas European address it must go via ocean freight as described on the shipping info page.  Battery shipping quote may not accurately reflect shipping cost needed for overseas orders, if possible use shipping option "select this if order includes battery". In any case Support will contact if additional funds are needed.





1. My battery pack stopped charging, what should I do?
2. My battery is reading (any #) volts, how much life is left before I need to recharge?
3. How can I increase my range without replacing my battery?
4. How long should i leave the pack plugged in?
5.How do i know when it is fully charged?
6.Are there things I can do to best care for the battery and prolong its life?
7. Why does my charger have a different voltage than the battery listed on the label?



1. Often if this happens it is due to the anti-spark feature built into the BMS. Say you did not properly make a connection somewhere and the wires sparked, the BMS would shut itself down to prevent damage to the system. If this happens the first thing you always want to do is to try resetting the BMS by using your charger to try charging through the discharge connector for a few seconds, maybe a minute. You just run a jumper (basically regular wires) from the charger's connector to the battery's discharge contact, making sure you go positive>positive and negative>negative. At Luna we call this jump starting it, instructions can be found here:

2. This is a 52v nominal pack. As seen in the chart below this pack is full at ~58V and empty at ~46V. For long battery life try to keep voltage at least between 56.7-46.3V (A charge percentage of between 90%-10%)



3. Here is an article that offers some good advise for increasing range. You can find it here

4. Well you should leave it plugged in until it is charged or maybe a little bit before it is fully charged, optimally you want it to be within a range of voltage/charge percentage equaling something like 80 to 90%, perhaps a bit lower if storing for a long time such as over the winter. This will optimize it for the longest amount of cycle life. You can still charge to 100% right before a ride though as this does not negatively affect the cells much, it is more about not leaving the cell at 100% for a long period of time than about never letting it reach that charge level.

5. If your battery has a voltage display on it then you can tell that is fully charged based on the voltage readout, we have charts on every listing for each type of battery pack showing what voltage equals what the charge percentage. You can also test the voltage with a multimeter directly from the discharge connector.

6. You can best care for the battery by not running it all the way down to zero, for the best care of it you really want to keep it above 20%. This is where having a large capacity battery is great because you will not be putting it through such a high depth of discharge, thus increasing its cycle life. Another way of caring for the battery is to make sure you use the right type of cell for your application, and if you are using a cell not designed for high amps, try not to pull too much amps from it. So if you are for example using an NCRB pack designed for range, if you want max cycle life maybe don't use it for a high performance application that would be better suited for a cell like GA or 30Q.

7. The voltage listed on your battery is just the nominal voltage, it actually goes higher and lower depending on the charge. The charger outputs at the highest voltage that the battery would reach when fully charged. See the chart on the listing for your particular battery and look at the 100% voltage level, that is about the voltage it should be charging at.

Product Reviews

Write Review

  1. With the GA cells, what an improvement over my NCRB celled battery!

    Posted by Shaun Disch on Aug 13th 2017

    This is an upgrade for me from NCRB cells to GA cells and I can pull many more watts with the GA celled battery on my BBS02 and i love it! The improvement is like when I went from 48 volts to 52v. I haven't used the PF cells so I can't say anything about them, but the GA cells really help for when I am late to work. Thanks Luna!!!

  2. Great battery!

    Posted by Edward Ebeling on May 8th 2017

    This battery is awesome for the Rad Rover just broken in and it even got better after the 4th or 5th time I charged it, again great battery great range and I'll always keep buying from Luna cycle thanks guys!

  3. Great Battery

    Posted by Bike Crazy on Apr 16th 2017

    I have a RAD Rover and this battery works fine with it. It has at least twice the range of the original battery and because of that the take off power last for a much longer time (at least three times longer) compared to the original battery. Don't be concerned by the time it takes for any bars on the lcd screen to start disappearing they will eventually it's just that strong a battery and I will probably buy another in the future as my back-up pack. Thanks Lunar for a great product. PS! You can pay $500 for the original 48volt with 11.5ah or this one for $500 with 52volts and 13,5ah and better cell technology your choice.

  4. Great battery! 52v 13.5Ah Dolphin NCRB (Long Range)

    Posted by Shaun Disch on Dec 1st 2016

    So glad to have this!!! Thanks Luna for the affordable battery and variable amp and charge charger! My original battery was getting weak after almost 2 yrs of use and 5,000 miles (I bought it locally with the BBS02, 48v 9Ah, it was not from Luna. I could get 12-18 miles out of a charge with it in PAS 5 or 4 respectively.) I can get 30 miles out of this new one with 350 feet of ascent with a BBS02 on a 26" mt bike with knobby tires on the street as a commuter in PAS 7(at much faster speeds with still much more range!) so I'm guessing probably 40 to 50 in PAS 5, 60 in PAS 4, more when I go back to slicks in the spring. I weigh 170 lbs, the bike is 50 lbs and I carry a 20 lb pack. I had 1-2 bars left on my dashboard while the battery itself showed one red and 3 orange after my 30 mile ride, while on the bench it showed 49v left which I is 28% left in the tank according to the chart Luna sent me in an email. Great battery, great email support, thanks Luna!!!!!!!

  5. Fits right on my Radrover battery bracket.

    Posted by Mark d Woods on Nov 27th 2016

    The easiest upgrade imaginable for my Radrover battery. The Radrover came with an 11.5ah 48v dolphin battery pack, that's equal to 552wh, which is not bad. However with the 52v 13.5ah dolphin pack I get over 700 wh. That's a considerable increase and I still have the original battery as an extra for a total of 1254 wh. That's a lot of range. I would heartily recommend this battery for the Radrover.

  6. As Good As It Gets

    Posted by Lyle on Nov 3rd 2016

    My wife has a 11.5 model of this battery on the rear rack of her 29er powering a BSO2. I am very impressed with it's power and range. The mounting bracket appears to be much stronger than my Dolphin 52 volt model. She has dropped the bike on several occasions without damage to the battery. I like the illuminated on off switch as well. If it fits you can't go wrong!

  7. powerful value, pf cells

    Posted by d nelson on Oct 30th 2016

    gives my bike extra get up and go over the stock 48v battery. glad to have this one for the hills!

  8. Powerful 2nd battery

    Posted by David on Oct 14th 2016

    Adds longer range to 750w 48v Bafang rear hub fatty bike than my stock 48v 11ah. Highly recommend. For a future second battery I'd get the 52v 14ah, if compatible with this hub.

  9. 13.5 AH NCRB Dolphin Pack

    Posted by Cliff Oliver on Jun 20th 2016

    The execution of this pack to sit where the down tube water bottle goes is great. Very solid platform, good plastic and metal parts, low center of gravity.
    Easy to use on and off button along with a USB port for lights or cellphone.

    The locking mechanism is to lock the battery to the platform that is screwed into the water bottle threads. Easy on and off of the battery to the platform.
    A lot of lattitude back and forth or up and down allows you to mount it higher or lower on the down tube.

    700+ watt hours gives me about 35-40 miles depending on the pedaling I do. This is averaging 19-20mph on a greenway with the BBSHD. If you are riding with a group, you will be pedaling more because probably the average speed of 19-20 mph will be too fast. You then might get quite a bit more miles.

  10. Just got it but love it.

    Posted by Unknown on Dec 7th 2015

    Just got this battery. It's got lots of power and range. I notice a bit more power than the 48v battery I have. I hope it lasts a while.