V2.0
RUNGU Electric Juggernaut Owner Manual
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2019 model year
Copyright 2019 Standard Bearer Machines, LLC
75
Prolonging the Life of your Battery
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Best Practices
The Electric Juggernaut features powerful, light-weight and high-performing batteries. NMC based
systems should expect around 3-5 years of use depending on how you take care of your battery and up
to 800 charge cycles. These batteries do have a shelf life so even if you are not using the pack, the
battery will only be good for so long.
To prolong the life and performance of the pack, it is best to not drain the pack to zero capacity (like
when the battery management system shuts it off). Going from 100% to zero capacity will adversely
affect your life cycles. It is much better, for instance, to go from 100% to 50%. If you only rode your bike
3 miles every day, you are better off charging the battery after each ride instead of waiting until the
battery is dead. Keeping the depth of discharge less than 80% (so from 100% to 20%) will make sure you
get the full life from the battery.
Heat and discharge rate also will adversely affect the life and performance of the battery. If you want
more life from your battery and system, it is best to use a lower power level. The lower the power level,
the less stress (and heat) it puts on the battery cells and battery management system. This equates to a
longer cycle life and better performing battery.
Maintenance
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After strenuous rides, and every 500 miles or six months
1.
ALWAYS check the integrity of the battery case and battery system. Make sure the battery
padding is usable, and each battery is secured well in its case. If you notice wear marks on the
battery casing, Use duct tape to cover the wear marks and add padding in the wear area
(packing foam is fine).
2.
Check spokes on all three wheels. The electric wheel often requires more attention due to the
torque of the motor. Spoke and wheel maintenance are part of a normal bicycle maintenance
procedure and will be accelerated with an electric motor. Do not take chances with the spokes
and if you think they are loose, chances are you are correct. The spokes should all have the
same tension. If they are loose, tighten them yourself, or take it to your local bike shop to get
fixed.
3.
Check and replace tires as necessary.
4.
Check all electrical connections making sure that they are all tight. Bad contact means energy is
wasted as heat, which can cause a breakdown of wire insulation. Any wire with melted
insulation indicates a poor connection nearby. Disconnect the batteries and do not operate if
insulation is melted or wire is exposed.
5.
Clean, inspect and lubricate your chain, or if necessary, replace the chain. Clean the chain with a
brush and an over the counter chain cleaning solution. If you observe gear changes to take
longer than normal, it may be time to replace the chain. Contact
consult the Internet for the most appropriate replacement chain on the market at the time.
6.
Inspect the cassette cogs for wear. If you experience chain skip at higher power levels, your
cassette cogs may be worn and require replacement. Contact
, a
qualified bicycle technician, or the Internet on sourcing and exchanging your replacement
cassette.
7.
Service your brakes and brake pads. You can source maintenance supplies from Rungu, but
Bicycle stores also have equipment to bleed the hydraulic system and replace the mineral oil.
