High-Capacity Battery to Fit Sur-Ron Ultra Bee

Sur-Ron Ultra Bee battery upgrade, 81V lithium pack
Sur-Ron Ultra Bee 81V lithium battery upgradeSur-Ron Ultra Bee 81V lithium battery upgrade
The Ultra Bee is a big bike that eats batteries on long rides. Our Ultra Bee battery upgrade is a high-capacity custom pack that fits the Sur-Ron Ultra Bee, matched to your controller. These are Fast E batteries, built to spec for us and fitted and supported by our team on the Sunshine Coast, QLD. We quote every job, so you’ll get a price for your exact build.

Who it suits

  • Ultra Bee owners chasing more range than the stock battery (see the official Ultra Bee specs)
  • Riders running an aftermarket controller such as a VTB or Ventus unit
  • Owners with a failed BMS or battery who want a replacement pack

Ultra Bee battery upgrade builds

Here are example builds we can quote. Each one is a starting point, and the pack can be changed to suit your bike.
  • 81.4V 70Ah, 340A, built for the Ultra Bee
  • Other voltages and capacities to suit your controller and the space available
  • Every Ultra Bee battery upgrade is matched to the current your controller draws
  • Our packs use an ANT smart Bluetooth BMS, so you can monitor voltage and temperature in the ANT BMS app (iOS and Android).
  • Cell options include EVE, Molicel and Samsung, depending on the build.
  • Our packs use XT60 or XT90 connectors for charging and QS8 or QS10 for discharge. We can match your controller’s plug.

How the quote works

  1. Start a quote in the chat and pick Custom battery.
  2. Tell us the bike or application, voltage, capacity or range you want, controller, max continuous and peak current, connectors and quantity.
  3. Send photos and measurements (length, width, height) of the battery space, plus your postcode.
  4. We spec the build and come back with a quote and turnaround. We quote every job, so there are no set prices.
  5. Once you approve, the pack is built, then fitted at our workshop or sent to you by dangerous-goods road freight.

Shipping

Packs this size travel by dangerous-goods road freight, not Australia Post. You can also pick up your pack or have it fitted at our Sunshine Coast workshop.

FAQ

My Ultra Bee won’t power on. Is it the battery?

It could be the battery, BMS, controller or wiring. Book it in through the chat under repairs and we’ll diagnose it before recommending a new pack.

Can you match my controller’s error-free setup?

Tell us the controller brand and model. Some controllers need the bike model set correctly to run with a new pack, and we check that when fitting.

Can you post the battery to me?

No. Packs this size are dangerous goods and Australia Post doesn’t carry them. We send them by dangerous-goods road freight, or you can pick up or have it fitted at our Sunshine Coast workshop.

Is there a warranty?

Warranty details are confirmed in your quote. We ship custom packs worldwide, with freight quoted to your country. Start a quote with the chat button, bottom-right, and pick Custom battery.
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