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Handing Precautions and Prohibitions

Release time:2016-09-21 14:23  The publisher:admin


Preface
This document of “ Battery Operating Instructions”& “Handing Precautions and Prohibitions” shall be applied to sells of all models which are to be manufactured and supplied by Fullymax Battery Co., Ltd

Note 1. 
The customer is requested to contacted Fullymax in advance, if and when the customer needs other application or operating conditions than those described in this document and  “Battery Operating Instructions” . Because additional tests and experiments maybe necessary to verify performance and safety under such conditions.

Note 2.
Fullymax will take no responsibility for any accident when the cell is used in other conditions that those were described in this document & “Battery Operating Instructions”.

Note 3.
Fullymax will inform, in written form, the customer of improvement(s) from a view up proper using and handing of the cell, if it is deemed necessary.

Charging
Changing Current: Changing Current should be less than maximum charge current specified in specification. Charging with higher current than recommended may cause damage to cell performance and safety features deeply and can lead to heat generation or leakage.
Charging Voltage: Charging shall be done by voltage less that specified in specification(4.20V/cell). Charging at above 4.25V, which is the absolute maximum voltage, must be strictly prohibited. The charger shall be designed to be applicable to this condition. Because it is very dangerous that the charging with higher voltage than specified may cause damage to the cell performance and safety features deeply and can lead to heat generation or leakage.
Charging Temperature: The cell shall be charge within a range of specified temperatures in specification. Always let the battery cool down to ambient temperature before charging.
Prohibition of Reverse Charging: Do not reverse the positive(+) and negative(-) terminals. Otherwise, during recharging, the battery pack will be reverse-charged, abnormal chemical reaction then may occur, and excessively high current may flow during recharging which possibly lead to damage, overheating, smoke emission, bursting and/or ignition.
Use specific Polymer charger only. Do not use a Ni-MH or Ni-Cd charger, It is your responsibility solely to assure the charger you purchased works properly.
Never charge batteries unattended. Always monitor charging process to assure batteries are being charged properly. Always charge the batteries in an isolated and safe area away from any flammable or/and combustible materials.

Discharging
Discharging Current: The cell shall be discharged at less than the maximum discharge current specified in specification. High discharge current may reduce the discharging capacity remarkably or cause overheat.
Over-discharging: It should be noted that the sell will be over-discharged because of its self discharge characteristics in case the cell is not used for a long time. In order to prevent over-discharging , the cell shall be charged periodically to maintain around 3.0V to 3.8V. Over-discharging may lead to loss the cell’s performance, characteristics or battery functions. The charger and the produce which the battery used in shall equip with a device to prevent further discharging exceeding a cut-off voltage specified in specification.

Storage/Inventory
The cell shall be stored in an environment with low humidity free from corrosive gas and combustible material within a temperature range of -10 to 40℃ 
It is recommended to strictly observe the first-in first-out(FIFO) principle through manufacturing and distribution of the product.
A higher cell voltage during storage will accelerate the deterioration of capacity,it is recommended to keep the cell at a lower voltage(about 3.8V/cell)throughout the period of storage.Storage for a long period may result in over-discharge, due to self-discharge of the cell When storage for a period longer than one year, charge the cell at least once a year to about 3.8V/cell so as to prevent over-discharge.

Protection circuit Module(PCM)
To maintain safety and prevent significant deterioration of cell performance, the cell shall be with a PCM which can protect cell properly. The PCM shall have the below functions:
Overcharge prevention; 2) Over-discharge prevention;3)Over-current prevention.

Handing of cells
Aluminum Laminate Film:Easily damaged by sharp edge parts such as Ni-tabs,pin and needles, compare with metal can case Lithium-ion cells.
Cell mat be damaged by heat above approximately80℃.
Seal break may cause electrolyte leakage which may lead to short circuit, smoke emission, bursting and/or ignition.
Never make the cells short circuited. It makes generation of very high current especially for our high power series cells which subsidiary cause heating of the cells and mat cause the electrolyte leakage, smoke emission, ignition and/or explosion which are very dangerous. The polymer tabs may be easily short-circuited by putting them on conductive material. An appropriate circuitry with PCM shall be employed to protect accidental short of the battery pack.
Mechanical Shock: Polymer has less mechanical endurance than metal can case of Lithium-ion cells.Falling, hitting and bending mat cause degradation Polymer characteristics.
Handing of Tabs: the Polymer tabs are not so stubborn especially for Aluminum tabs of positive terminal. Don’t put much force on polymer tabs. Don’t bend tabs many times.Al tab may easily be torn off by shear force.

Notice for design Battery Pack
Pack Toughness: Battery Pack should have sufficient strength and the polymer battery inside be protected from mechanical shocks.
Cell Fixing: the polymer cell should be fixed to the battery pack by its large surface area. No cell movement in the battery pack should be allowed. 
Inside Design: No sharp edge components should be inside the pack containing the polymer battery. Enough insulation layer between wiring and the cell shall be used to maintain multiple safety protection.
Tab Connection: Ultrasonic welding is recommended for polymer tab connection method. Polymer pack should be designed that shear force aren’t applied.
For Mishaps: Pack should be designed not to generate heat even when leakage occurred for mishaps.
■ Isolate PCM from electrolyte leakage as perfectly as possible.
■ Avoid narrow distance between bare circuit patterns.

Notice for assembling Battery Pack
Shocks, high temperature or contacts of sharp edge components should not be allowed in battery pack assembling process.
■Solder directly to polymer tabs is not recommended. When you solder directly to the polymer tabs, it is necessary to consider not to apply too high welding temperature and welding time to guarantee the temperature transmitted to the cell lower than 80℃. Temperature above 80℃ may cause damage to the polymer cell and degrade its performances.
■ In case that the battery pack is fixed by ultrasonic welding. It’s necessary to consider not to apply too much ultrasonic welding power to the polymer cell and electronic circuits such as PCM.
Otherwise, it may cause serious damage to the cells and electronic circuit.

Battery Life
Batteries that lose 20% of their capacity must be removed from service. Discharge the battery to 3.0V/cell, making sure output wires are insulated, then wrap battery in a bag for disposal properly.

Danger and Warning
Please comply with the following items, otherwise abnormal chemical reaction may occur which will lead to the battery damage, overheat, emit smoke, burst and/or ignite: 
Do not disassemble or modify the battery.
Do not connect the positive (+) and negative (-) terminals with a metal object such as wire, rings on your hand. Do not transport or store the battery together with metal objects such as necklaces, hair pins, etc.
Do not incinerate nor dispose the battery in fire or heat it.
Do not use or leave the battery near a heat source such as fire or heater (80℃ or higher). Do not recharge the battery near fire or in extremely not weather.
Do not immerse the battery with liquid such as water, seawater, drinks, etc. And do not allow it to get wet. 
Do not pierce the battery with a nail or other sharp objects, strike it with a hammer, or step on it. Do not strike and throw the battery pack.
Do not use an apparently damaged or deformed battery.

If the battery damages, gives off and odor, generates heat, becomes discolored or deformed, starts to balloon or swell up, or in any way appears abnormal during use, recharging or storage, immediately remove it form the equipment or battery charge, disconnect the battery, stop using it and observe it in a safe place for approximately 15minutes. The battery can still ignite even after 10minutes due to the delayed chemical reaction can occur.
Never let the temperature transmitted to the cell higher than 80℃ when direct solder the cell tabs to wire leads or devices. It is recommended to spot welding to the c ell tab with lead tabs with pre-soldered wiring. Otherwise. Heat can melt down its insulation and damage its safety feature.
Do not force the connection if you cannot easily connect the battery terminals to the charger or other equipment. The positive (+) and negative (-) terminals are arranged in a particular orientation. Confirm that the terminals are correctly oriented.
Electrolyte is harmful. If the battery pack damages, and electrolyte gets into your eyes, contacts your skin or clothing, do not rub them, instead, rinse your eyes and/or skin, wash it away with clean running water and immediately seek medical attention. Otherwise, eye injury may result and skin inflammation can occur.
Do not use the battery pack for purpose other than those specified.
Do not mixed use batteries with different types, model, capacities, size, brands, charge and discharge, or new and old in the same assembly.
If charging operation fails to complete even when a specified recharging time has elapsed, immediately stop further recharging.
Do not put the battery into a microwave oven or pressurized container.

Caution
Do not use or subject the battery to intense sunlight or hot temperatures such as in a car or in hot weather. Never recharge battery outside the specified temperature range of 0 to 45℃.
The battery pack incorporates built-in safety devices. Do not use it in a location where static electricity may be present. Otherwise, the safety device and be damaged.
Store the battery in a location where children cannot reach it. Also, make sure that a child does not take out the battery pack from the charger or equipment.
Before use, carefully study the “Battery Operation Instructions” & “Handling Precautions and Prohibitions”. For further information, contact a nearest Fullymax distributor or representative. Safe keep the manual for future reference.
For recharging procedures, refer to the Operation Manual of your battery charger.
If you find rust, a bad odor, overheating, battery balloon or swell up, discolor, deformation, and/or other irregularities when using the battery for the first time, return it to your supplier or vendor.

 

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