A, the characteristics of the lead-acid battery( be applicable to FM, GFM, SW series)
1, Sealed :The unique sealing technique design guarantees that no leakage occur from the battery, and the safety valve can keep exterior air and dust from getting into the inner of the battery;
2, Maintenance-free: because of the unique sealing design, there is no need to add water during the service life.
3, Safety and reliability: no leakage, reliable safety valve  make sure  the battery more safe and reliable.;
4, long-time service life: due to selection of lead calcium alloy for grid metal, the anti-corrosion ABS material and the good sealed technique to ensure the long life of battery
5,  high quality:
1) High energy and energy density,  low internal resistance and high output power;
2)  Excellent charge and discharge characteristics, the self-discharge below 2% every month at 20℃;
3) good recovery, if deep discharge or something happened to the charger, then short circuit then placed for 30 days, can also recovery capacity by using equalization charge;
4) because of the good consistency of the internal resistance, capacity and float voltage, it is no need use equalization charge during float charge.
6, wide range of temperature tolerance: can work normally at temperature between -30℃ and 50 ℃;
7, easy to use and transport: If charged, there is no liquid also can withstand the battery in any position, and will meet all requirement of sea and land transport;
8, economic: The battery with high quality, extra-long life time and the lowest cost of maintenance more economic and utility.

Battery configuration

Two, the discharge of the battery
1, the discharge termination: The battery should not placed till below the end voltage, otherwise, the over discharge would occur and the repeated over discharge would cause the failure of battery recovery.  In order to the keep best work efficiency and the longest life time, discharge should be at 0.05c to 3c..
2, the discharge capacity:
1) the relationship between the battery discharge capacity and discharge current: Diagram1 for the FM, GFM, JMF series with the capacity at the different discharge rate, see from the diagram, the more the discharge current, the lower of the capacity discharge.
2)Temperature effects: the temperature also affect the battery capacity, the low temperature (below － 15 ℃ /5 ℉) will lower the valid capacity, and the high temperature(over 50 ℃ /122 ℉) also damage the battery.(such as figure Two show)


Three, charge method for FM, GFM, JMF series
1, Float Charge (limit voltage, control current): Float voltage at 2.25 V ～ 2.30 V/cell, the max. discharge current not more than 0.25C10s, and adjust the current below 2 mA/AH.(25 ℃ ).(please refer to figure 3)

2, charge method for cycle:( Stop when battery charge;charge battery after discharge ) charge voltage is 2.4 V/cell, the max. charge current not more than 0.25 C10s.(please refer to figure 4)

3, temperature compensation :The chemical reaction change along with the temperature change.
Battery working at  5 ～ 35 ℃ no need temp     compensation, , be temperature is low then 5 ℃ perhaps high then 35 ℃ , to prevent from to the battery lead the owe perhaps, suggesting to make appropriate adjustment towards charge voltage, adjusting standard float is-3 mv/ ℃ /cell, circulation usage for-4 mv/ ℃ /cell(the temperature take 25 ℃ as basis), (please refer to figure 5).
4, the charge time calculation: for stand-by battery, if used and re-charging time not less than 24 hours, for cycle used battery, if know the output capacity and the initial charge current, can calculate the charging timeat 25℃ from the formula as below:
A. When discharge current more than 0.25 C
Cdis
Tch= I +3~5
B. When discharge current less than 0.25 C
Cdis
Tch= I +6~10
Note: Tch= the time of the full charged battery(hour)
Cdis= the previous discharge capacity (Ah)
I= the max. current(A)
Four, the battery lifetime
1, the main factors which affect the battery lifetime:
Repeated deeply discharge( especially deeply discharge without fully charge)
The working temperature is too high
over charge( especially the flow type charge)
Over charge current
storage for a long time when fully charged(especially under the high temperature)
2, the service life for cycle used:
it is the one cycle when the battery charge and discharge, the cycle used life (circulation times) is related to the depth of discharge, the battery working temperature and the charging method.(refer to figure 6)

3, the lifetime for floating charge:
the charge and discharge voltage both affect the floating life, also including the battery working temperature, figure 7 for the FM, GFM series, figure 8 for the JMF series.

Five, the keeping capacity
1, self-discharge:
1)it is unavoidable that the battery capacity will decrease if storage for a long time. Even the battery haven't used, because of battery inner chemistry and electricity chemical reaction which cause the battery self-discharge,.The  reasons for BAYKEE battery self-discharge as following:

Chemistry factor: In spite of is the positive AGM (PbO2) or negative AGM (Pb) etc activate material, all need through decompose or respond( electrolyte) with sulfuric acid gradually, and change a more stable sulfuric acid lead, this process is to turn on electricity by oneself.
Give or get an electric shock a chemistry factor: Because impurity material of existence, battery would because of the inner part become partial electric circuit or with two pole the occurrence oxidize a revivification reaction but result in to turn on electricity by oneself.
The BAYKEE battery electrolyte because of low content of impurity, so as to keep , this comes from battery of super and strong keep characteristic. It from turn on electricity a characteristic, showing on figure 9 .
2) batter of from turn on electricity speed and storage temperature to also have a close relation, please pay respects to figure 10.
2, pass to open a new road electric voltage can judge the surplus capacity of battery, figure 11 for the surplus capacity of the battery with open a new road the relation curve diagram of of electric voltage:
Six, the battery storage
The battery should be stored with the low temperature, aridity, cleaning place, avoid a hot source, the sunlight keeps shooting. The battery should be full charged storage. And you had better charge it every 3-6 months in normal temperature..
The battery should be charged when drain out, do not deposit it without charge;
The battery should be charged immediately when stored for a long time, until the battery recovers the original level;
if the capacity only 40% of the rating capacity or below this, (open voltage is below 6.3 V/12.63 V at 25 ℃),should recovery the capacity by equilize charging method;
it can be stored for a longer time with low temperature, for example it can be stored for more than 12 months without humidity, sunshine and stored at 15 ℃.

SENVEN, THE INSTALLATION
Please check the appearance of the battery before using.(have no leakage, break)
The battery should be installed by professional engineer.
Please wearing the gloves when connect the batteries, the usage twists a hand plank etc. metals tool, please carry on metals tool to insulate a packing, in order to prevent get an electric shock;Absolutely avoid coming in contact with metals tool in the meantime battery of positive, take to carry son, make battery short-circuit.
when transit the battery should be carefully avoid damaging the pole..
if there are many batteries used for a system, please line the battery with the mark “+” “-”, and the space between the two batteries should not less than 15mm, and must tight the battery, or it will bring the spark and the bad connect.
when using the insert terminal Please don't change the shape and position of the terminal. If you have the special requirement, please contact us.
please confirm the poles of the group battery are correct when connect the battery to the equipment, then connect the battery positive the equipment positive, and the negative the other side.. 

Eight, maintenance and usage
1. Periodical (at least each three months once) check, it need to replace if some thing happened as below:.
a. the abnormal voltage
b. Any physics influence (bump or the shell distortion)
c. Any electrolyte leaks
d. Any abnormal fever
2. When the battery used for fire alarm device, should check the fire alarm according to the standard check.
note:
Forbid to dismantle the battery at will, if the container is broken, and contact the sulfuric acid, please flush with clear water, or to see the doctor if necessary.
Please make sure the correct connect, avoid the short circuit when use some batteries in the group.
Please don't use more than 3 sets of battery parallel connection, or please contact our company.
please avoid vibration or harmful by machine.
About the battery charge or discharge method, please refer to this manual.
Please do not use the battery with the high temperature or closet..(suggest cycle used temperature as 5~35 ℃)
Please use the container with the holes to spread heat.
Please don't use the battery with different capacity, different company and mix the old and the news in the group..
Please don't put the battery near the fire or burn into the fire.
Please do not deposit the battery scarp, should be together in the place or callback by the company.

NINE APPLICATION
UPS
Fire prevention and security system
Emergency illumination system
Communications equipment
Electric power system
The power station switch controller
The bank uninterruptible power supplies
Telephone and communications equipments
Motorcycle
Power tools
Medical equipments
Solar energy system
Marine equipments
Control equipments
electrically-powered machine
Environmental protection type motor car
Electronic bicycle