Sur Ron Battery 72v 20s 3600Wh 50Ah “Vengeance” Molicel P45b 40Kw

EBMX, Torp & Nuclar Compatible

The worlds most powerful 72v Sur Ron / Talaria Battery

Malevolently Powerful

Extreme Power Long Range 3600Wh
Molicel P45b 21700 Cylindrical Cells
Tough Protective 316 Stainless Steel Case
Fully Protected 220A/550A BMS
Parallel Discharge QS8 Connectors
Free High Power Loom
*UK Warranty

Power: Extreme (40Kw)
Range: Very High (3600Kwh 240% Over OEM)
Height: Tall (373mm)

Battery Activation Required On Delivery

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

The Vengeance – Malevolently Powerful!!

Sur Ron Battery 72v 20s 3600Wh 50Ah “Vengeance” Molicel P45b 40Kw. This is the big power daddy of the Dominator. Smaller (range wise only) but able to pump out EXTREME power. We wanted to make a slightly more cost effective battery with almost identical performance with only a small sacrifice to range but a huge price drop of around £500 GBP. This is a truly incredible piece of engineering. The build list is a dream: using Molicel P45b. These are the very best cells second only to the  illusive and more expensive p50b cells on the market – (under ration from Molicel). Pure copper sheet connections. Hybrid ANT 550 BMS (220A/550A), stainless steel 316 casing.

Ohms law sates V (volts) x A (amps)  = W (watts). Electric motors spin so many times per volts. More volts more spins (RPM) more top speed. But here is the geeky and cool bit (literally). Amps create heat, so the less amps you use, the cooler stuff runs. Heat kills electrical components as the heat literally melts soldered contacts internally, insulation burns off and glues melt. When you increase voltage, you need less amps to get the same amount of power. For example, a 72v battery running at 200 Amps gives 14400 watts. But if you use a 81.4v battery at 200 amps, you get 16200Watts!!! So if you want to run cooler then drop your amps back down to 176A and your still hitting the same power. With this battery you can set your amps as high as your controller can go. It will burst (for a short period) 40,000 watts (45Kw) but will maintain 18Kw.

Cells (there are 220 in this battery) all have internal resistance. The more resistance, the more heat they produce, until they start to damage. The Molicel P45b is classed as the worlds No2 premier cell  (only surpassed by its big and hugely more expensive big brother the rare Molicel p50b) for low resistance for a high power density (Ah). So with this low resistance, they are able to supply enormous amounts of power without over heating.

This Sur Ron Battery 72v 20s 3600Wh 50Ah “Vengeance” Molicel P45b 40Kw power as limited by the 550A (peak/burst for 10 seconds) by the Ant 550 BMS.

We then upgraded the casing from stainless steel 304 to marine grade 316 so absolutely no rust issues here! Super tough and powder coated inside and out.

The main Sur Ron Battery to controller connectors we use QS8 connector with 6 AWG going direct to the controller and a second smaller 8AWG with a free high power loom that goes via the red trip

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, all our batteries have a full working BMS. Any power shorts or irregular current and the BMS shuts down.  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).

Fitting

The battery uses two sets of discharge cables. As this battery is extreme high power, we supply included with the price a High Power loom with its 6AWG cable and QS8 connector to replace the OEM loom that has the less powerful black/orange D6 connector that directly bolts into the bikes trip switch/breaker. The second 6AWG loom with QS8 connector (we also supply free) goes direct to the controller. This enables the power to be fed “In Parallel” increasing the electrical flow, reducing resistance and reducing harmful heat. It shares the power delivery and takes the strain away from the original loom. However these must be connected in a correct order (simple instructions supplied).

Torp do not like direct power to the controller (your second cable), so please just do not use the additional power cable.

Specifications Sur Ron Battery

Same physical size as our 72v Dominator Battery

When connecting the battery to the bike and to avoid a spark, turn the red trip switch on the bike to off. Connect the older original power cable and then turn the red trip to on. Then connect the new power leads. Removing the battery has no special order.

Charging: First time charging is VERY important. Always connect the charger to the battery with the charger powered up from the mains. This will stop a “Connection Spark”. The battery needs a “Balance Charge” on first charge. Please charge for 12 hours first time.

Charger NOT included

Please note, Lithium batteries are considered hazardous and due care and attention should be taken. Although these cells are in wide use, and professionally manufactured in a purpose built factory; because of the power of the battery, we strongly recommend that precautions are taken. We do not recommend charging inside the family home and charging should be supervised. We take no responsibility for misuse. These batteries are thoroughly tested (full discharge and charge cycles at the manufacturing stage and also pre-delivery). These are not DIY or amateur built devices.

This will not work with the original Sur Ron Standard Controller

* Warranty, due to the nature of use of these devices (off road) manufacturer warranty is limited to 12 months from date of purchase of  the battery. Any damage the result of water ingress, alteration, may void warranty. Failure to comply with the correct connection procedure may lead to damaged to the BMS and connection plugs and will not be covered by warranty. This includes shortening of cables and changing connectors. It is the owners responsibility to proof against water ingress and not use in unacceptable very wet conditions, or use direct water from hose/washers.
Warranties are not transferable. We do not warranty second hand goods.
We reserve the right to slightly modify or change this product without notice.

Additional information