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Technical Manual For DC Series Batteries 

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Deep Cycle series batteries are designed to have a large amount of stored current discharged between charging sessions, with very heavy non-porous battery plates to withstand repeated 

major discharging and charging cycle(deep cycle). The Deep-cycle batteries uses a different chemistry for the plates active paste material, and a slightly stronger electrolyte than normal 

battery electrolyte, which allows for a much longer life in deep cycle applications. 

The batteries in solar application are always over discharged, or operated under partial state of charge (PSOC). The working conditions of batteries in solar application are worse than those 
in  situations  where  technical  support  is  readily  available.  FUli  DC  series  batteries  have  an  advanced  grid  structure,  superior  leady  paste,  and  are  manufactured  using  improved  plate 
formation methods to meet the requirements of frequently cyclic & deeply discharge.DCbatteries are also suitable to low & high temperature conditions. 

 
Sealed Construction

 

FULI

’s unique construction and sealing technique guarantees that no electrolyte leakage can occur from the terminals or case of any FULI battery. This feature insures safe and efficient 

operation of FULI batteries in any position. FULI batteries are classified as "Non-Spillable" and will meet all requirements of the International Air Transport Association. (I.A.T.A Dangerous 
Goods Regulation). 
 

Long Service Life, Float or Cyclic   

The 

FULI

 VRLA battery has a long life in float or cyclic service. Depending on the average depth of discharge, over 500 cycles (50-70%D.O.D) can be expected from 

FULI

 VRLA batteries.. 

Design float life should reached 10 years. 

Maintenance-Free Operation

 

During the life of 

FL

 batteries, there is no need to check the specific gravity of the electrolyte, or add water. In fact, there is no provisions for such maintenance functions to be carried out. 

 

Low Self Discharge 

 

Because of the use of Lead Calcium grids alloy, 

FULI

 VRLA battery can be stored for long periods of time without recharge.   

 

High Recovery Capability 
FULI

 battery has excellent recharging capability, even after very deep discharge. 

 

Heavy Duty Grids 

 

The heavy-duty lead calcium-alloy grids in 

FULI

 batteries provide an extra margin of performance and service life in both float and cyclic applications, even in conditions of deep discharge. 

 

Operating Temperature Range 

FULI

 batteries can be used over a broad range of ambient temperatures, allowing considerable flexibility in system design and location.   

 

Summary of Contents for Deep Cycle series

Page 1: ...te leakage can occur from the terminals or case of any FULI battery This feature insures safe and efficient operation of FULI batteries in any position FULI batteries are classified as Non Spillable and will meet all requirements of the International Air Transport Association I A T A Dangerous Goods Regulation Long Service Life Float or Cyclic The FULI VRLA battery has a long life in float or cycl...

Page 2: ...RLA batteries It is necessary to closely control the actual voltage to ensure that it is within the limits advised Float Service 2 25 2 30 Vpc at 25 Cycle Service 2 4 2 45 Vpc at 25 FULI suggests that the initial current be set within 0 2 C Amps Figure 1 shows one example of a constant voltage charging Constant Current Charging This method of charging is generally not recommended for VRLA batterie...

Page 3: ...p between temperatures and charging voltages in both cyclic and standby applications Effect of Voltage on Battery Gassing Although the batteries are of the recombination type and the amount of gassing at normal operating voltages and temperature are negligible if the charging voltage is increased gassing will occur despite the recombination design of the product Gassing does not normally occur whi...

Page 4: ...oximately 3 per month when stored at an ambient temperature of 25 The self discharge rate will vary as a function of ambient storage temperature Figure 4 shows the relationship between storage times at various temperatures and the remaining capacity Shelf life In general when lead acid batteries of any type are stored for extended periods of time lead sulphate is formed on the negative plates of t...

Page 5: ... current of 0 1C Amps or 15 to 20 hours at constant voltage of 2 45Vpc Within 12 months after manufacture 8 10 hours at constant current of 0 1C Amps or 20 24 hours at constant voltage of 2 45Vpc In order to successfully top charge a battery stored for more than 12 months the open circuit voltage must be checked to ensure that it is higher than 2 0 volts per cell Therefore ALWAYS check the open ci...

Page 6: ...an be performed once or twice per year Safety When carrying out any work on the battery the applicable safety standards should be followed Note it is recommended that a battery log be maintained and that records should be kept of the total voltage measurements any mains failures major battery discharges current and time etc The main factors causing reduction in the life expectancy of FULI DC Serie...

Page 7: ...ts into contact with your skin or eyes generously wash the affected area with clean water and consult a physician immediately 4 Batteries explode if put into the fire Never dispose of batteries in the fire 5 Mixed usage of batteries differing in capacity type manufacturer or history of use charge discharge operation must be AVOIDED for this may damage the batteries and the equipment due to the dif...

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