Solar Energy Storage

Rechargeable 25.6V 55ah Lithium Battery Pack for Solar Storage System

EverExceed LDP Series Lithium Iron Phosphate ( LiFePO4 ) batteries are developed to deliver high efficiency energy output compared to equivalent lead acid batteries. They are able to accept continuous high rate charging amps which make the battery fully charged in short time and improve the load service efficiency significantly. The built-in advanced BMS ensures intelligent automatic protection against over voltage, over current, over discharge, over temperature.



  • brand:

    EverExceed
  • Model:

    LDP 24-55
  • Rated voltage(V):

    25.6V
  • Rated capacity(Ah):

    100Ah
  • Certificates:

    UN 38.3; CE
  • OEM/ODM Service:

    Yes, customized service available
  • Usage:

    Solar / wind energy storage system, UPS backup power, Telecommunication, Electric vehicle, Medical equipment, Wheel chair, Sweeper, Solar street light, Toys etc.
  • Features
  • TECHNICAL DATA
  • SUCCESSFUL CASES
  • Download
  • Factory
  • Video
  • FAQ

Rechargeable 25.6V 55ah Lithium Battery Pack for Solar Storage System






Cycle life & Light weight 


3000+ cycles at 100% D .O .D . (Depth of Discharge).

Higher energy density compared to lead acid batteries, the battery weight is reduced considerably .  

Only approx. 30% weight of equivalent lead acid battery, which making it easy handling, more robust.


Easy to replace lead acid battery


EverExceed Lithium iron phosphate battery BMS also allows the battery can be charged fully with standard lead-acid characteristic curves charger, which means replacement for original lead acid battery become easy . However, we suggest you buy our matched Lithium iron phosphate battery charger to achieve 2 hour fully charge ability .





Superior safety


An built-in reliable Battery Management System (BMS) guarantees the safe operation during whole service life. The BMS is built with perfect automatic protection against over-voltage, over-current, overdischarge, over-temperature.

Fast charging ability


EverExceed lithium iron phosphate batteries can be easily fully-charged within a very short time due to large amps charging acceptance. it is able to accept up to 1C (1 x rated capacity) continuous charging amps which makes the battery can be fully charged within 2 hour. this feature will greatly improve the load service efficiency .




Wide applicable operating temperature range


-20℃ (-4℉) and +60℃ (140℉).
High temperature is the killer to all types of lead acid batteries. However, EverExceed Lithium iron phosphate battery can work much easier under hot temperature environment. For example, 40℃ (104℉) working temperature normally will shorten lead acid battery life to 30% left only, however it is no affect on. EverExceed Lithium iron phosphate battery service life, still 100% available.

Long Shelf life


EverExceed Lithium iron phosphate battery's shelf life can achieve up to 1 year without any fresh charging. Lead acid battery normally requires fresh charging every 6 months during storage, otherwise sulfuration will happen and damage the battery .






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ELECTRICAL SPECIFICATIONS
Nominal Voltage 25.6 V
Nominal Capacity 54Ah
Energy 1382 Wh
Resistance ≤50 mΩ
Self Discharge <1.5% Per Month
Series connection
2 Units max.
Parallel connection
4 Units max.
CHARGE SPECIFICATIONS
Recommended Charge Current 27 A
Maximum Charge Current 54 A
Recommended Charge Voltage 28.4 V-29.2 V
BMS Charge Voltage Cut-Off 29.2 V (3.65 ±0.05 VPC) (1.1 ±0.4 s) 
Reconnect Voltage 28.8 V (3.6 ±0.05 VPC)
Charging Method CC-CV
DISCHARGE SPECIFICATIONS
Maximum Continuous Discharge Current 54 A 
Peak Discharge Current  110 A (<2s)
Recommended Low Voltage Disconnect 22 V (2.75 VPC)
BMS Discharge Voltage Cut-Off 16 V (2.0±0.08 VPC) (20 ±0.6 ms) 
Reconnect Voltage 20 V (2.5 ±0.05 VPC)
Short Circuit Protection 200-600 μs
TEMPERATURE SPECIFICATIONS
Discharge Temperature - 4 °F to 140 °F (-20°C to 60 °C)
Charge Temperature 32 °F to 122 °F (0 °C to 50 °C)
Recommend Storage Temperature 23°F to 95°F (-5°C to 35 °C)
MECHANICAL SPECIFICATIONS
Dimensions (L x W x H)
12.9 x 6.8 x 8.7 "
328 x 172x 220 mm
Weight 14.1 Kg
Terminal Type M8
Case Material ABS
Enclosure Protection IP55

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  • LDP 12-55.pdf


1. What is the battery type? Is it cylindrical, square, or soft pack?

--We use lithium iron phosphate batteries,with  no fire, no explosion, wide operating temperature range,which  can ensure the safety of use.

Generally, likesmall-capacityy batteries below 50Ah, we use cylindrical cells to ensure the flexibility of the design capacity. For large-capacity batteries above 50Ah, large-capacity square cells are used to reduce the number of parallel cells to ensure the consistency of the cells.


2. What is the operating temperature range of the battery?

--Charging working temperature: 0-50℃

Discharge operating temperature: -20-60℃


3. Does the battery have BMS? What protection does it have? What happens when BMS protection starts ?

--The battery has BMS built-in, withoverchargee, over discharge, over current, over temperature, under temperature, shortcircuiti ,t and other perfect protection functions.

If the corresponding protection is triggered, the corresponding function will be disabled, for example, if the overcharge protection is triggered, the battery is prohibited from charging, but it can be discharged.


4. What is design life? How many times is the cycle life?

--Battery design life of 15 years, cycle life can reach 3000 times @100%DOD, 6000 times @80%DOD


5. What charger to use to charge the lithium battery?

--It is recommended to us  lithium iron phosphate charger, our company can provide  matching lithium charger. ECP series chargerscan bee recommendedd forrlow-powerr chargers, and ECA series chargers canbe recommended forr high-powerr chargers.


6. What is the recommended maximum charging current?

--The recommended charging current for LDP series small-capacity batteries is 0.5C.


7. Can it be used with the towing motor, and how long can it run?

--Our battery can be applied to the towing motor, but we need to confirm that the maximum output current/power of the battery meets the requirements of the motor. The specific running time can be calculated only after the selection is confirmed.


8. Will the battery discharge to the point where it can't be charged like a lead-acid battery?

-- Lithium battery built-in BMS protection board, if the light, will automaticallyprohibitst the load output, timely charging can be restored.


9. How many such batteries can be connected in series/parallel?

-- Max series up to 48V. That is, the 12V battery can be 4 strings, and the 24V battery can be 2 strings. The maximum number of parallel connections should not exceed 4.


10. in the case of no charging status light, how to judge whether the battery is fully charged?

-- Lithium battery built-in BMS protection board, full charge will prohibit battery charging, so use the clamp ammeter to detect no charging current, indicating that it is full.


11. How long does it take to charge?

-- This is related to the charging current, if you charge according to 0.5C, you can fill the battery in about 2 hours.


12. Can the battery replace the lead-acid battery in the power supply?

-- Can replace ≤48V lead-acid battery pack. However, it is necessary to confirm whether the maximum output current/power of the battery meets the requirements of the system.


13. whether it can be used as a car battery?

-- It is necessary to confirm whether the maximum output current/power of the battery meets the requirements of the motor.


14. Where can this battery be used?

-- Small capacity battery, suitable for use in UPS, emergency lights, electric toys, small floor machines, golf carts, etc

Large capacity battery, suitable for use in RV, camping, yachts, fishing boats, golf carts, solar energy systems, etc


15. how much protection can be achieved?

-- The general is IP55, the maximum can be customized IP68

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