52v 12Ah 65Amp Light weight Downtube High Discharge Battery Samsung 30Q + Charger

£525.00 £499.00

52v 12Ah 65Amp Light weight Downtube High Discharge Battery Samsung 30Q

Available on back-order



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

UK Warranty. UK Made

52v 12Ah 65Amp Light weight Downtube High Discharge Battery Samsung 30Q 3A Charger

These are custom made to order and take 15 working days for dispatch

For international order plese email: [email protected]


This is the very best of battery technology: 14S4P 52v12Ah (Samsung 30Q high 15Amp output per cell and 3000mAh) with 3Ah UK charger. 65Amp Nominal BMS and pure nickle 0.15 sheet.This is the highest UK output available downtube type battery on the market, designed to fit on down tube utilising water bottle bolts. These are specifically designed for high output discharge and sustained high drain. Other inferior cells used in cheaper packs simply can’t deliver like these. If you think the cost is high, these batteries have 70 cells that retail in the UK for around £7 each! not including: BMS, casing , charger, shipping taxes AND FABRICATION.


We do not recommend these batteries for power output above 65A (3000W), these will handle all 65A or lower 48/52V applications but have been specifically built for the Motors with the ASI controller or CYC X1 Pro. They have XT 90 connectors. My over heat if used for prolonged sustained 65A use due to the small enclosed inner working area of the casing.

Due to the high power out put of this battery, we may have disconnected the power switch depending on which BMS we have in stock at time of manufacture.

The cradle and locking mechanism is still used t0 secure your battery to the bike, but power comes direct from the rear of the battery (No down tube mass produced case can take these high amps through a cradle)

Please ALSO note, these are genuine new cells and made up into complete battery specially to order. Being higher discharge, labor and components are much higher grade and the BMS is almost three times the cost of our STD 40A version. Paypal fees, the markup is minimal! Not all down tubes are the same and some slight modification maybe necessary to the mounting plate of the battery. You tube has an abundance of “How To” videos.

Google “Tip for hard mounting shark pack to bicycle frame Ebike

Space required, please see photo= 380mm * 120mm * 90mm)

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.

* 6 Month Warranty is for manufacturing defaults and does not over miss use or accidental damage. These units are extremely strong and robust and will not let you down unless abused. We undertake warranties here in the UK. We take the pain!

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.

Discounted when bought as a compltes kit with BBSHD.