Super73® Battery Upgrade | Nexbat NEXS73 Range Extender


NEXS73 Range Extender Lithium-Ion Battery Pack for Super73® eBike Series R/S2/Z/ZX by Nexbat. Double the range of your Super73® eBike with Nexbat’s custom-built, compatible, tested and approved lithium-ion battery pack. The NEX73S battery pack for Super73® is a must-have, high-quality performance upgrade delivering optimized power and range capabilities. Choose the best configuration option to match your riding style from the standard series or triangle variation battery packs. Custom-built per order by lithium-ion battery experts at Nexbat, the NEXS73 Range Extender comes equipped with Samsung 50E 21700 cells (Molicel P42A 217000 cells for triangle variation), Xiaoxiang bluetooth BMS, state-of-the-art polycarbonate case, automatic safety lock with key, and an easy-to-install mount made for Super73® bike frames. 


NEXS73 Super73® Battery Upgrade Features:

  • Compatible Super73® Series:  R | S2 | Z | ZX
  • Largest Battery Upgrade on the Market to Date
  • 2x Battery Capacity (Ah) for Doubled Range
  • Smart BMS with Bluetooth by Xiaoxiang
  • Optimized Power (v) / Range (Ah) Configurations
  • Samsung 50E 21700 Cells (standard battery pack)
  • Molicel P42A 217000 Cells {triangle battery pack)
  • Compatible with Super73® Stock Battery Charger
  • Compatible with Super73® Fast Battery Charger
  • New Charger Not Required
  • Ready To Use Out-of-the-Box Upgraded Battery System
  • No Assembly Required. Easy To Attach and Remove
  • Simply Mounts to Super73® eBike Frame
  • Automatic Safety Lock with Key
  • State-of-the-Art Polycarbonate Case Design
  • Expedited Shipping Options Available at Checkout
  • Tested and Approved by Nexbat for Quality Assurance

NEXS73 Battery Upgrade Includes:

  1. NEXS73 Battery Range Extender with Samsung 50E Cells
  2. Smart BMS with Bluetooth by Xiaoxiang
  3. Mount (+screws) for Super73® eBike Frame
  4. State-of-the-Art Polycarbonate Case
  5. Automatic Safety Lock with Key

Power (v) And Capacity (Ah) Configuration Options*

Choose from the following custom configurations for optimized range and power. The orientation of your cells is determined by the number of cells in series (s) and in parallel (p). The associated power (V) and capacity (Ah) follows each description of cell orientations. Our Standard Battery Pack comes equipped with Samsung 50E 21700 Cells in the following configuration options:  10s9p 36v 45Ah | 13s7p 48v 35Ah14s6p 52v 30Ah | 16s5p 60v 25Ah | 20s4p 72v 20Ah

 *To accommodate high discharge rates for the Triangle Battery Pack, we use Molicel 217000 P42A cells with the following configurations20S5P 72V 21Ah | 20S6P 72V 25.2Ah

Compatible Charge Port & Connector
Nexbat’s NEXS73 Range Extender is built with Super73’s stock battery connector and charge port, making it completely compatible with your existing charger. So, unless you no longer have the original Super73® stock charger or compatible fast charger, there’s no need to buy a new battery charger.

Request Your Specified Connector
Upon request, we offer several different connector options to choose from. If a specific connector is not requested, your battery will come standard with the XT90 female AntiSpark 10awg silicone connector. For triangle variations, connector options are 8awg with either ose8 or XT90.

Out-Of-The-Box Performance Upgrade
When your Super73® eBike battery system arrives, it’s ready to go when you take it “out of the box.” No assembly steps required. No modifications needed. Just mount the upgraded battery system to your Super73® eBike frame, then plug it in, and you’re ready to go. Removing your battery is just as simple.

How To Order The NEXS73
Choose from Nexbat’s custom-built NEXS73 power (Ah) configuration options and get your Super73® battery upgrade shipped today. The NEXS73 arrives ready, out-of-the-box, minutes away from doubling your Super73® eBike range. All electric bike batteries and power performance upgrades by Nexbat are tested and approved for quality assurance.

  1. Choose battery cell power and range configuration
  2. Request specific connector (optional)
  3. Choose shipping method (ships immediately)
  4. Continue checkout: billing / shipping info)

Additional information

Weight 18 lbs
Dimensions 15 × 7.2 × 6.57 in
Battery Cell Configuration:

10s9p 36V 45Ah, 13s7p 48V 35Ah, 14s6p 52V 30Ah, 16s5p 60V 25Ah, 20s4p 72V 20Ah, 20S5P 72V 21Ah (Triangle Pack), 20S6P 72V 25.2Ah (Triangle Pack)


  • Dimensions:  15″ x 7.2″ x 6.57″
  • Weight:  18 lbs
  • Case Material:  Polycarbonate
  • Standard Series Battery Pack:  Samsung 50E 21700 Cells
    • Configuration Options:  10s9p 36v 45Ah  |  13s7p 48v 35Ah  |  14s6p 52v 30Ah  |  16s5p 60v 25Ah  |  20s4p 72v 20Ah
  • Triangle Variation Battery Pack:  P42A Molicel 21700 Cells
    • Configuration Options:  20S5P 72V 21Ah  |  20S6P 72V 25.2Ah
  • Cycle Life:  500 Complete Cycles
  • Charge Port:  Weipu 2-Pin Aviation, Waterproof, 13 amps

Quality Guarantee

Our expert team at Nexbat designs, builds, tests, and delivers high-performance batteries and battery upgrades for electric motorbikes and e-bikes. We are passionate e-motorbike enthusiasts and e-bike riders just like you. It shows in the quality of our products and the dedicated support we provide for our customers and retailers. Your shopping experience here at our store on is a priority. If you have additional needs or suggestions for improving our service, we would love to hear from you. Please don’t hesitate to drop us a line at anytime.


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