Battery Management System BMS 18S Light
5 Warnings
WARNING: Read the ENTIRE instruction manual to
become familiar with the device and its features before
operating. Failure to operate the product correctly and
safely may result in damage to the product, personal
property and cause serious injury.
This product must be operated with caution, common
sense and in harmony with any regulations in place.
Usage requires special mechanical and electrical ability
and training. Failure to operate this product in a safe and
responsible manner could result in injury or damage to
the product or other property.
This product is not intended for use by children. Do not
attempt disassembly, use with incompatible components
or augment product in any way without given approval by
the manufacturer. This manual contains instructions for
safety, operation and maintenance. It is essential to read
and follow all the instructions and warnings in the manual,
prior to assembly, setup or use, in order to operate
correctly and avoid damage or serious injury.
Age Recommendation: Not for children under 18 years.
This is not a toy.
Throughout the literature the following terms will be used
to indicate various levels of potential harm when
operating this device.
NOTICE: Procedures which, if not properly followed,
create a possibility of physical property damage AND little
or no possibility of injury.
CAUTION: Procedures which, if not properly followed as
described in this manual, create the probability of physical
property damage AND a possibility of serious injury.
WARNING: Procedures which, if not properly followed,
create the probability of property damage, collateral
damage, and serious injury OR
create a high probability of superficial injury.
WARNING: This device may not be used for
applications requiring fulfilment of special safety
standards. Among others this includes:
Vehicles, aircrafts, certain machines and
operation in safety critical environments like
medical, nuclear and military!
Page 3 Rev. 1.0
6 Type of batteries
This product may only be used for suitable batteries,
such as LiIon, LiPo and LiFePo4. The settings in the
software must the changed to match the cell chemistry
and other call parameters. Please refer to the data
sheet of your battery cell.
Depending on your country, safe handling for
untrained persons is limited to a certain voltage range.
If you don’t have professional training, you may not
operate this device above the specified voltage range.
This voltage range is specified by the low voltage
directive of your country of operation.
WARNING: Battery cells may not be overcharged or
operated below their lowest specified discharge
voltage. Batteries operated outside these parameters
are a serious risk of fire and/or explosion! Even a
single event of overcharge and over discharge should
result in a safe disposal of the battery!
Typical values for different cell chemistries are:
(Lowest discharge voltage - Max charge voltage)
LiFePo4: 2.5V – 3.6V
LiIon: 2.8V - 4.21V
LiPo: 3.2V - 4.21V
For optimal battery life it is recommended to stop
charging at 95% of the possible charge level and
avoid discharging the cells to the lowest possible
voltage. For example LiIon: 3.2V – 4.15V per cell.
WARNING: Battery cells may not be mixed! A battery
must be made from cells of the same chemistry, same
type, same age, and same wear level! Each cell must
be fused with an appropriate fuse.
7 Charger
The charger must match the battery chemistry,
battery voltage (cells in series) and maximum battery
charge current. The maximum possible charge current
this product can safely handle is 12A.
The charge port must be secured with an appropriate
fuse.
The BMS is capable of decoupling the charger if the
battery faces conditions outside of safe parameters.
This includes overcharge of individual cell groups and
over temperature of the battery pack.
8 Charge process
The charge process must be monitored at all times!
Never attempt to charge a hot battery or battery that
was just used. Let the battery cool down before
charging it. Let the battery cool down before using it
again. Monitor the battery temperature before and
after the charge process.
Before charging the battery make sure to monitor the
state of balance. A healthy battery should stay well
balanced throughout the discharge and charge
process. A battery with cell balance issues may have
bad internal contacts or incorporates damaged cells!
