Little Pro Rider LPR 12 JNR MX, Owner'S Manual

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OWNERS MANUAL | Model: LPR12 Jnr MX V1.0
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Maintenance Procedures: (continued)
6) Replacing the battery:
WARNING:
See “Electrical and Lithium Battery Safety” on page 5– 6.
Lithium batteries could catch fire or explode if overcharged, short circuited, crushed or
punctured. Wear safety glasses and have appropriate fire prevention measures in place
prior to changing the battery. Do not attempt if you do not have necessary skills to
complete the task safely. To be completed by an e-bike mechanic.

Do not short circuit, crush or puncture battery

Dispose of the old battery according to local laws

Use only genuine replacement batteries
The battery is rated to last 300 cycles. It is not recommended to remove the battery from the
bike unless it needs replacing. The lithium polymer Battery is very powerful but also fragile in
construction. Each cell has a separate sealed pouch with a volatile electrolyte inside each. The
battery is a very neat fit inside the frame and is well protected whilst it is in there. But it may be
easily damaged when removed. Lithium polymer batteries can sometimes swell or puff up as
they age, sometimes making removal of the battery even more dangerous and difficult. If you
suspect a fault with the battery ensure you test it prior to determine to replace it (see
troubleshooting section for how to test).
To remove the battery safely, the battery needs to be fully drained of any power before removal
from the frame
. Note: Lithium batteries can catch fire if recharged from low voltages below
18V, once you further discharge the battery, it must be replaced for safety reasons.
The Battery Monitor System (BMS) and Motor Speed Control both have a low voltage cut off
which will only allow the battery voltage to drop to 18v when the battery is normally empty.
An alternate load needs to be applied to the battery for the battery to drop below 18v. Ensure
each cell is discharged to 0 volts (an e-bike mechanic can do this). Once all the power is
completely drained to 0v, the battery can then be removed safely.
Step 1 : Remove frame cover and disconnect the battery. Drain power completely to 0v.
Step 2: Disconnect the BMS and Motor Control unit and remove both from the frame. Mark
cables and connectors as necessary to ensure you connect them correctly later. Take note of the
layout prior to removal and wire configuration and anti-rattle foam blocks locations.
Step 3 : Remove Battery.
Step 4 : Reinstall new battery with foam anti rattle blocks on top.
Step 5 : Inspect all electrical components wires and connectors and if ok, reinstall the BMS and
the Motor Control Unit with anti-rattle foam blocks then connect all wires.
Step 6 : Finally fit covers and function test.