ASI BAC855 52v BBSHD Controller + Hard Case Triangle 52V 28Ah 2600W

Original price was: £1,048.00.Current price is: £999.00. (price including VAT)

ASI BAC855 52v BBSHD Controller + Hard Case Triangle 52V 28Ah 2600W



ASI BAC855 52v FOC BBSHD Controller Upgrade + Hard Case Triangle 52V 28Ah 2500 Watts with 4A Charger

UK Stock, All taxes Paid, No Waiting, No China returns!!!!

*UK Warranty

Only UK and EU Ground shipping

Tough, Strong, Powerful, Reliable, Affordable!


BBSHD ASI BAC855 52v FOC Controller Upgrade 2600w (Peak) Display, Cover, Loom

This is the fastest  BBSHD upgrade solution in the world.

Higher Volts, Higher RPM Higher Speed !


This purchase the controller will be set to 52v by default 

International orders will be charged additional shipping (we now ship to EU)

 This is very latest controller with enhanced feature (see photos)

This is truly plug n play and expect GENUINE  speeds of around 45+ MPH


Did you ever wish your BBSHD went substantially faster, pulled harder and you didn’t have to be told you can’t buy the controller you want – shush it’s a secret?

This controller has everything: field weakening (allowing higher rpm), totally plug n play and now with tuneable PAS via our new Electron Display.

Advanced processing and state of the art allows it to compute much faster and much more accurately than the standard Bafang unit (or any modded Bafang controller). Imagine your first media phone in comparison to the latest Iphone/Android device? – Things have moved on and these Canadian devices have not been designed with penny pinching mass market sales like the original.  All of this makes your  motor pull much harder and release around 15% more speed than a 52v 30A Bafang controller and whopping 100% more power than the standard and go 72v 200% !!!!!!!!! We might add the power is designed to come in without the mechanical snapping lurch of an inferior set up.

These controller have been set up so that it can handle anything from 50A (70 A burst) up to 2600wW depending on voltage (easily within their design). This might mean a little explaining:

We have tested the BBSHD to destruction and on more than one occasion right up to 4500 Watts and learned a few things, real facts and not the odd exception.

Amps create heat, heat weakens the nylon gear and too many watts snap the pinion. So how do we get around this? Simple, know the limits but don’t get too close. Sure these are now nearer the limit, but ridden correctly (let the motor spin and don’t labour in the wrong gear), a reliable ride can still be had. At the lower volts where big amps are needed, we have capped the limit to 2600w @72v but as you increase your volts A ludicrous controller at 50A has 2500Watts, but now add 10 -15% improvement through field weakening!

Now with working brake and gear sensors.

Additional mounting kit (not included) here:

ASI BAC855 Mounting Kit


Battery 52v 28Ah:

We normally only sell our own bespoke batteries, but when we found these, we were so impressed that we decided to buy some in and sell them pour selves.

Tough hard ABS cases that are water sealed, LED batter display and quality on/off swatch. There’s another well known manufacturer (low quality) hard case seller out there that simply does do a good enough job (we booted then four years ago)..Our supplier took the case idea from them, went back to the drawing board and decided to o it properly!

GENUINE cells,

PURE Nickle strip

Inn house quality BMS that wont fail.

50 Amps continuous discharge but peaks of 150A!

28Ah @ 52V  giving 1456 Watt Hours – Brilliant range for a triangle in frame battery!!! (this is 3.5 times bigger than the standard Bosch Powerline battery.

0.2 mm pure nickle sheet welded.

112 x Samsung 35£ 3.5 AH (14s8p) 18650 cells.

Anderson XT90 Discharge – Or Anderson Power Pole (Black + red just ask what you want at checkout

Anderson XT60 Charge

Incudes 4A charger

Dimension: approx.350*340*220*T80mm

Weight 6Kg


This battery is suitable for our ASI BAC855 72v system.



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 as above. The charger will display two red lights (charging) after a long period of time (between 1 and 8 hrs – depending on state) the LED charger lights will display red and green. This indicates an initial charge is complete. However, as this is a new battery, not all cells within the battery are balanced (same state of charge as some were higher/lower than others to start with). This is because cells can arrive at the factory in different batches and may have slightly different charges due to time in storage). This is very common and normal. Now please leave the charger connected to the batteries for a further 12 hrs. This allows the internal balancing system (BMS) to balance out all the internal cells. The charge may turn on and off over this period of time. This “Balance charge does not need to be done every time and is recommended every 20+ charges. Leaving the charger plugged in working does not damage the batteries. The charger is designed to stop charging at a preset level and turn on again when this level drops.

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.



* Warranty, due to the nature of use of these devices  (off road) warranty is limited to 12 months from date of purchase. Any damage the result of water ingress, alteration, may void 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. Any alteration modification to this controller or its subsequent wiring, even cutting the power leads to make shorter will immediately invalidate any warranty. Even battery disconnected, the controller can still maintains current and can be shorted/damaged. The controllers are waterproof, but can still suffer from water damage through the connector and hence are not covered for water damage.
Using high PAS in a high gear under heavy load may cause the controller to overheat (power level 9 in a small rear cog). Gears should be used going uphill or any other heavy load.
Attempting to reprogram the controller may cause damage.
Warranties are not transferable.
We reserve the right to slightly modify or change this product without notice.



Buyer releases Electron Cycles or any person trading on or behalf of the business known as Electron Cycles from any liabilities, therein known as Electron Cycles (expressed or implied, arising by law or otherwise) that may occur from the use of products sold by Electron Cycles and purchased by Buyer. These products are being sold for “Off Road/Competition Use” only and may be used only on two wheel vehicles (bicycles, electric bicycles, two wheel electric powered vehicles) used solely for “Off Road/Competition” (off-road being defined as a private land with land owners permission and not public highway or byway). The Buyer also recognises that Lithium batteries are classed as hazardous and should not be: stored, used, charged in place, facility any area that is not fire proof or safe to do so. That batteries should not be taken into the family home, office, workplace or school place. No other applications are intended or implied. The Buyer of product sold or provided by Electron Cycles acknowledges and agrees that Seller disclaims any warranty and expressly disclaims any liability for personal injury or damages or any damages to vehicle, expensed occurred, personal property or third persons. Electron Cycles will uphold the warranty of the manufacture of the product sold for a period of six months from date of purchase from manufacturer defect. In the event a manufacturer’s warranty exists, it is agreed and stated that Under no circumstances shall the seller or manufacture be liable for any labour charged or travel time incurred in diagnosis for defects, removal, or reinstallation of this product, or any contingent expenses.

Lithium batteries by nature are considered hazardous items and should never be brought in to the family home or any other structure where fire may cause risk to: life, injury or possession. Batteries should always be charged and stored in a safe fireproof place. While being used, the safety to others and others property must be considered and is the direct responsibility of the purchaser. Any harm to the purchaser or other third parties or property is not the responsibility of Electron Cycles or any person trading on or behalf of the business known as Electron Cycles and   hold no responsibility either implied or otherwise for mechanical, electrical or other failure when using any products or any costs or damages resulting from these items purchased or otherwise obtained from Electron Cycles or any person trading on or behalf of the business known as Electron Cycles





Additional information

Weight 12 kg
Dimensions 45 × 30 × 30 cm