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Fuli Deep Cycle series Technical Manual

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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.
Technical Manual For DC Series Batteries
Web：http://www.fulibattery.net
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Summary of Contents for Fuli Deep Cycle series

  • Page 1 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.
  • Page 2 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 Figure 1 Figure 2 example of a constant voltage charging.
  • Page 3 The discharge capacity of a lead acid battery varies and is dependant on the discharge current. FULI VRLA battery capacity is measured at the 20-hour rate.
  • Page 4 3% per month when stored at an ambient temperature of 25 ℃. The The self discharge rate of FULI 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.
  • Page 5 1.5 months In general, to optimize performance and service life, it is recommended that FULI batteries which are to be stored for extended periods of time be given a supplementary charge, commonly referred to as a “top charge ", periodically. Since any battery loses capacity through self discharge, it is recommended that, prior to putting the battery into service, a process called “top charging “be applied to any battery which has been stored for a long period of time.
  • Page 6 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 Series cells: - Deep discharges - Poor regulation on the float voltage - Cycling or micro- cycling - Poor quality (smoothing) of the charging current - High ambient temperature.
  • Page 7 - Use only a damp cotton cloth for cleaning purposes. - There is no technical reason for limiting the number of strings but for practical installation reasons, it is recommended not allowed to exceed 3 strings in parallel especially if the battery is used in high discharge rates (backup time less than 15 mins) (1) When cleaning the batteries, use soft cloth only.

This manual is also suitable for:

Dc series

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