Sur Ron Battery 81v 49.5Kw 50Ah Evolution

 Extreme Race Battery

Charger, Spacers, Everything included!

EBMX, VTB, Torp & Nucular Controllers Compatible

High Power Long Range 4050Wh
Tenpower 50XG 21700 Grade A Cylindrical Cells
Tough Protective 316 Stainless Steel Case
Fully Protected 250A/550A BMS
Parallel Discharge QS8 Connectors
Free High Power Looms
*UK Support & Warranty

Power Evolved

Shipping: UK (Free) Additional Shipping for Highlands and Islands +£30
EU land ship available, invoice only (20% VAT Removed)
For EU please email: [email protected]
Cash on collection available by appointment

Power: Extreme High (49.5Kw)
Range: Very High (4,050)
Height: Tall (375mm – will need seat lift or aftermarket lid)

Battery Activation Required On Delivery

On delivery, please send us a request to have your battery activated.
This will also be regarded as confirmation your battery has been received.

The Evolution 81 – Power Evoloved

More Volts,  More RPM, More Top Speed. Less FW required. Less heat.  More gearing to play with!

Extreme race battery for extreme power outputs.

Sur Ron Battery 81v 49.5Kw 50Ah Evolution. As new cells come to market and more manufactures are getting involved in the very high performance cell sector, competition is giving more choice and prices are more competitive.  Our batteries now encompace these changes. Placing ultra high performance cells with lowered cost. Our batteries have EVOLVED to bring you the very best in: quality, performance and saftey.

The build list is like a dream: Tenpower 50XG ultra low resistance cells with huge 5Mah capacity. These are one of the very best cells on the market.  The battery is made with pure copper sheet connections. The Hybrid BMS,  ANT 550 BMS (250A/550A).  The exoskeleton case made from marine grade 316 stainless steel. We use two sets of high of quality 6AWG silicon power leads with qs8 anti spark connectors. Batteries are supplied with two bike side high power looms, aluminium spacers and charger. EVERYTHING is included (even shipping and taxes)

Cells

There are 220 cells in this Sur Ron Battery 81v 49.5Kw 50Ah Evolution. All have internal resistance. The more resistance, the more heat they produce, until they start to damage. The Tenpower 50XG is classed as one of the worlds premier cells for ultra low resistance at 4Ohm for a high power density (5Ah) cell. So with this ultra low resistance, they are able to supply enormous amounts of power without over heating.

Power

Sur Ron Battery 81v 49.5Kw 50Ah Evolution power as limited by the 49.5Kw/550A (peak/burst) by the Ant 550 BMS. A genuine constant power of 20Kw/250A non stop output. In real world scenario this is wheel popping at 60 mph and top speeds circa 90mph (must have a suitable motor and controller to achieve this)

Exoskeleton / Casing

We have upgraded the casing to marine grade 316 stainless steel, so absolutely no rust issues here! Super tough and powder coated inside and out. Built tough for offroad use.

Connectors

The battery has two equal sets of discharge cables, both with qs8 Anti Spark connectors.

NB: You do not have to use both sets of discharge cables. However using only  one set, power  must be reduced to 20kw ( or you will cause battery damage)

Fitting

From the battery connectors to the controller (bike side, controller to battery). We supply two (free) High Power looms. One loom is fused and goes direct to the controller. A second  high power loom  goes via the red trip switch/circuit breaker (replacing the factory original).

We use two sets to share  or “parallel” the power. This reduces heat, transfers loads more efficiently and keeps the connectors from overheating.

Domestic Electrics

This means all your bike accessories are still powered. Some believe that not using the circuit breaker direct to the controller removes the safety of the circuit breaker, however the direct cable is fused. All our batteries have a full working BMS. Any: power shorts or irregular current and the BMS shuts down.  Thwe BMS is much more sensitive and accurate than a mechanical breaker (you may note that the Sur Ron Ultra Bee does not use a circuit breaker and relies on the BMS alone).

For those using a Torp Controller, Torp do not like direct power to the controller via your second cable.  You can either not use the additional power cable we supply (we do not like to remove these as often buyers transfer batteries to another bike or other controller).

Battery Decal

The standard Evolution battery sticker is in red.  Please state if you wish a different colour (Purple, Blue or Orange) request.

Specifications Sur Ron Battery

Same physical size as our Dominator Evo 72v.

Cell Specifications

Connecting to Bike

When connecting the battery to the bike and to avoid a spark, turn the red trip switch of the bike to off. Connect a battery qs8 connector the connector installed via the  ciruit breaker  and turn on the ciruit breaker. Then connect the second direct power lead. Removing the battery has no special order. qs8 connectors have anti spark built into them and should be pushed together slowly.

Battery Charging

First time charging is VERY important. Always connect the charger to the battery with the charger powered up at the mains first. This will stop a “Connection Spark”. The battery needs a “Balance Charge” on first charge. Please charge for 12 hours first time.  Always charge your battery in a safe place and never unsupervised.

Charger Included

Our recommended charger for this battery is:  https://electroncycles.com/product/charger-81v-92-4v-6a/

This Battery will not work with an original standard Sur Ron Controller

Bike Not Included

Warranty:

For our Warranty terms, please check here: https://electroncycles.com/warranty-policy/

Disclaimer is available here: https://electroncycles.com/terms-and-conditions/