Instruction/Manual

Manual MODSTER EC-135
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5. Battery
- Keep the battery pack away from children.
- Be careful when handling battery packs with high cell counts. It is essential to ensure good insulation, there is a risk
of electric shock.
- Do not allow leaking electrolyte to come into contact with re, it is highly ammable and can ignite. In the event
of an explosion or re, never extinguish the batteries with water. Only extinguish with dry extinguishing agent
(sand, etc.) or smother the ames by covering.
- The electrolyte liquid should not get into the eyes, if it does, wash it out immediately with plenty of clean water and
then consult a doctor.
- The electrolyte uid can also be washed o clothing and other objects with plenty of water.
- Do not expose lithium batteries to excessive cold or heat and direct sunlight. Do not heat the battery, throw it into
a re or place it in the microwave. Charge and store batteries in a reproof container or lithium safe (e.g. AN-262582).
- Do not subject battery to pressure or impact, deform or throw. Protect from accident or fall. Never use damaged
batteries and dispose of them properly.
- Never place the charger or connected batteries on ammable or conductive surfaces. Never operate in the vicinity
of ammable materials or gases. Charging the battery in the model can cause the model to burn down in case of a
defect! Do not leave the battery unattended during the charging-discharging process or during operation.
Read the charger instructions carefully before charging.
- Do not charge batteries which are strongly heated or undercooled. Allow batteries to cool down to approx. 20-30°C
or warm them up before charging.
- Only cells of the same capacity and make may be charged together.
- Make absolutely sure that the polarity of the batteries is correct and prevent short-circuits, especially through
non-insulated connector systems.
- In case of contact with water or penetration of moisture into the battery, there is a risk of explosion due to short-cir-
cuiting.
- Do not charge with reverse polarity.
- Do not solder directly to the battery.
- Do not modify or open battery.
- Do not charge batteries above 4.2 volts (+/-0.05V) per cell and do not discharge below 3 volts per cell.
- Charge batteries only with suitable lithium battery chargers with connected or built-in equalizer/balancer, never
connect directly to a power supply.
- Do not use the battery in locations subject to high static discharge.
- All this can cause the battery to be damaged, explode or catch re.
- Never charge batteries unattended!
- Never charge, store or keep the battery in the model or inside a car.
Charging procedure
Only use chargers that have been expressly approved by the manufacturer for use with lithium batteries. Lithium
batteries can only be charged using the CC-CV charging procedure. Make sure that the charger is correctly selected.
In the rst charging phase, the charger keeps the charging current constant. With a charging current of 1C and a
discharged battery, this rst phase takes approx. 50- 60 minutes. A battery capacity of approx. 80-90% is charged.
When the end-of-charge voltage of 4.2 volts/cell is reached, only the voltage is kept constant and the charge current
drops. A further 35-40 minutes are required to charge the remaining capacity. If the value reaches the lower current
limit of approx. 5-10% of the specied charging current, the charging process is switched o by the charging device.
At a charge rate of 1C, this means that the entire charging process takes approx. 90 minutes when the battery is
discharged. A lower charging current of 0.3-0.5 C is recommended for the rst charging process. This measure facili-
tates balancing and increases the service life of the battery.
Voltage sensor cable
Due to dierent cell temperatures during the discharge process, the individual cells gradually acquire dierent char-
ge states and voltage levels. The total charge voltage applied is then not distributed evenly across the individual
cells, which means that cells with a higher voltage level can be overcharged.To measure the individual cell voltage,
the lithium batteries have a separate plug connection (voltage sensor cable), from which a cable leads to each indi-
vidual cell.The black cable (Pin1) is the negative terminal of the rst cell, Pin2 the positive terminal. The next contact
in each case is the respective positive pole of the subsequent cell.
Connect the voltage sensor cable to the Equalizer/Balancer connector on the charger for charging, which conveni-
ently and automatically brings all cells to the same voltage value at the same time.
In addition, the voltage of each individual cell is monitored.