Colossus 72v 1440Wh, Hardcase Triangle. 125A, 1440Wh Bluetooth, Samsung 40T & Charger

£1,249.00 (price including VAT)

Colossus 72v 20Ah, Hardcase Triangle. 125A, 1440Wh Bluetooth, Samsung 40T & Charger

4 in stock


Colossus 72V, Hardcase Triangle Battery. 125A,  1440Wh Bluetooth, Samsung 40T Cells. 5A charger

We think the very best triangle pack in the world

UK Stock, No Import tax, No Waiting, No China returns!!!!

UK Warranty

New updated version with the fantastic Samsung 40T cells and  Matt sides

Sorry No International shipping

We take 3 days to prepare your order on this very special product


We designed this over  6 months, designed and redesigned. The results are staggering and speak for them selves:

Recommended for  80 A continuous (or less) applications but rated for 125 Amps continuous discharge but peaks of 150A!

Specially designed for the ASI BAC855 and ASI BAC2000, Sabvoton 60/80 SVMC controllers.

20Ah @ 72V  giving 1440 Watt Hours – absolutely huge for a triangle in frame battery!!!

Ant Bluetooth BMS giving series monitor.

Fully sealed  high water Resistance case (glued at the side panel join, so no water ingress – no on /off switch) only full submersion will let water in through the wire exit grommets.

0.2 mm laser cut pure nickle sheet welded.

100 x 21700 Samsung 40T cells. The ultimate high power cell – the very best on the market.

Anderson XT 90 Connectors for discharge and xt60 connectors for charge (XT90 limit the pack to 90A).

Full genuine OEM Velcro straps are supplied for quick and simple fastening to the bike.

5A charger.

Free convertor from XT90 connection to Anderson (must be less than 50A draw) – please request in the notes at checkout

Independent review from Jamie N

“This battery is a total game changer. 1000 miles in already and it’s just incredible. Seems to stay so exceptionally well balanced like <0.005V max and I’m consistently getting even better range than my mates with the 52V colossus Tesla Panasonic battery one even tho I’m blasting it far more and having even more fun

 So so so very impressed with this build. It really is very special”

Weight 10KG

We strongly recommend that when installing the case, a soft pad be placed between the down tube and case (6mm number plate stickers are good). That the bulk of the case be supported on the down tube (not supported solely from the strap holders). In extreme cold conditions we do not advise using the battery.

We use only genuine new grade A cells and made up into complete batteries specially to order for us at our dedicated factory or here in the UK by our in house battery builders. We simply can’t buy a single battery, We have to agree to a production run of at least 20 batteries. The 0.2mm pure nickle sheet is laser cut and then electronically welded to the cells to give and safely handle this unprecedented “in triangle” huge power output with minimum internal resistances. The UK cases are fabricate here in the UK assembled by us after double checking everything.

We warranty these batteries for 6 months.

Space required, please see photo.

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.

* Warranty: Due to the nature of use of these devices  (off road) warranty is limited to 6 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.

Warranties are not transferable.

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.

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.





Additional information

Weight 10 kg
Dimensions 45 × 30 × 30 cm