48V 17Ah Downtube eBike Battery

The 48V 17Ah Downtube eBike Battery offers a sturdy mounting base and fit to the screw holes used to attach your bottle. The case has a metal reinforcing plate for additional strength. They fit most standard frames, but please check the sizing before you order. You can mount them either way up so suit frames with high or low bottle mounts. You can also use rivnuts to hang them under a bar on your frame. We also supply rubber mounting spacers to help the battery fit snuggly to your frame.

The battery locks (using a key) to the base to prevent theft, but is easy to remove once you get home. It can be charged on or off the bike.

The battery contains a BMS (Battery Management System) that shuts down the battery when it becomes discharged. It also protects the battery from overload and accidental short circuit. It also monitors each call during charge to ensure uniform charging of all cells, which helps to prolong the batteries’ life. The use of good quality Samsung cells with an integrated BMS means that this battery should be good for at least 800 charges.

The batteries are waterproofed for normal UK use. In other words they are fine with rain, frost, snow and mud. Please don’t however throw them into a lake.

Battery Connections:

These batteries come with XT90 socket sockets to connect them to your motor. We also supply a second XT90 plug with bare wires which you add to the motor if you wish.

Dimensions:

• 90mm(W) x 129mm(H) x 366mm(L)

Weight

• 4.9Kg

Battery Specification 

• On off switch
• Key release
• Samsung cells 78 x 2900MHA
• B.M.S (Battery management system) Over charge, Over discharge, Over current,  Short circuit,  Balance
• Upgraded connector

Capacity Testing

Please see the tab ‘Battery Capacity and Testing’ (above)

Packaging Content

• Battery pack and backing plate
• 2 x Keys
• 2A Charger and plug
• XT90 connectors and the corresponding male/female XT90 connector included
• Rubber mounting spacers

Important Advice

• Do not short (join) the positive and negative wires of the battery
• Do not reverse the polarity when connecting to the motor

• Do not expose the battery to very high temperatures
• Do not submerge the battery
• Do not disassemble the battery
• Do not use any charger unless it has been designed to charge this type of battery
• Please consider the environment when disposing of this battery

Fitting guide:

Downtube battery instruction video