Prismatic 3.2V 200AH Lithium Ion Battery Cells Rechargeable With Solar Storage

1 Scope

3.2V 206Ah(Seplos S206).

This product specification delivers the performance specifications, working conditions and safety risks of 3.2V-206Ah-LFP secondary battery (PN: Seplos S206) manufactured by Seplos.

2 Performance Specifications

2.1 Overview

2.2 / Charge Mode & Specifications

2.2.7 Other Charge Mode

2.3 Discharge Mode

2.4 Regenerate Pulse Charge Mode

Regenerate Pulse Charge must be carried out under the circumstances stated below. Pulse current and duration need to be strictly controlled according to cell temperature and SOC. Any violation may cause permanent damage to batteries for which Seplos will be relieved from its liability.

2.4.1 3.65V. The maximum regenerate pulse charge voltage 3.65V.

2.4.2 Regenerate pulse charge current and duration.

2.4.3 

Rest intervals between pulses ought to be no shorter than the pulse duration. Any charge current is prohibited during rest intervals, whereas discharge current or no current is allowed.

2.5 Capacity at Low Temperature (Initial Status)

2.6 Safety & Reliability

This product complies with the requirements of State-set mandatory standard of quality (GB/T 31485-2015) and of transportation (UN38.3).

3. Temperature Rise

During the measurement of temperature rise, battery cells should be set upright (according to 9. Cell Design Drawing) and placed in a large room with a stable temperature and enough convection. Temperature sensors should record both cell temperature and time. Temperature rise equals to cell temperature after discharge minus that before discharge.

4. Storage Specifications

5. Termination of Battery Life

A customer should monitor and record the inner resistance of each battery cell. Both parties should agree on the method to measure inner resistance. When the inner resistance of a cell reaches 250% of that of its initial status, it should be terminated immediately. Any violation may cause safety hazards for which Seplos will be relieved from its liability.

6. Working Conditions

6.1 A BMS should be integrated in battery packs to ensure monitoring, management and protection of each battery cell.

6.2 A customer should provide BMS requirements, such as system specifications, framework, data and format, so

Seplos would deliver BMS design and establish battery management profile accordingly.

6.3 Without the consent of Seplos, no changes may be made to BMS design or framework.

6.4 Operation data of battery should be recorded for responsibility determination of product quality. Incomplete operation

data will relieve Seplos from its liability for battery quality.

6.5 A BMS should have the following primary functions.

Note 6.5.2, 6.5.3, 6.5.5, and 6.5.6 are warnings. Batteries are out of working condition in these cases and should be segregated and protected by the BMS or the customer. Seplos will be relieved from liability for quality issues and subsequent damage (to the customer or to a third party) caused by the abuse of batteries stated in 6.5.2, 6.5.3, 6.5.5, and 6.5.6.

6.6 Cell OCV below 2.1V may cause permanent damage to the battery for which Seplos will be relieved from liability. According to 2.3.5, when discharge cut-off voltage is lower than 2.5V, the rest interval should be prolonged before the next charge.

6.7 If batteries are to be stored beyond 30 days, they should be charged to at least 50% SOC.

6.8 According to 2.2, charging at low temperature is prohibited regardless of the charge mode. Any violation may considerably lower the battery capacity, for which Seplos will be relieved from liability. The BMS should monitor and manage the ambient temperature according to the temperature range of standard charge and regenerate charge.

6.9 Batteries should be placed in a container with enough convection or other effective cooling system. Otherwise, Seplos will be relieved from liability for quality issues and subsequent damage (to the customer or to a third party) caused by overheating of batteries.

6.10 Batteries should be placed in a container which complies with the requirements of State-set standard of waterproof and dustproof. Otherwise, Seplos will be relieved from liability for quality issues and subsequent damage (to the customer or to a third party) caused by corrosion of batteries.

7. Safety Precautions

7.1 Prevent batteries from being immersed in water.

7.2 Prevent batteries from fire or overexposure to any high temperature environment specified in 2.1.7 & 2.1.8. Cell temperature should never exceed 55 or the BMS should shut down the battery system.

7.3 Prevent direct connection between the positive and negative terminal of a cell. The resulting short circuit could damage the product and generate heat that can cause burns. Special caution is required to prevent short circuiting any battery since the consequences can be very dangerous. Care must be taken during the installation of the battery pack to ensure batteries cannot be inserted in reverse. Also, caution must be given to prevent accidental short-circuiting of the battery.

7.4 Never reverse charge for it causes rapid gas generation and increased gas pressure, thus causing batteries to swell or rupture.

7.5 Prevent batteries from overcharge. A BMS should provide overcharge protection specified in 6.5.3 and 7.11.

7.6 Never leave the battery in the charger once it is fully charged. A timer is required to cut off the battery from the charger

should charging time exceed 8 hours (6.5.10& 7.11) or batteries may overheat and cause fire.

7.7 Avoid flame or sparks that could ignite the hydrogen gas produced by the battery and cause an explosion. Connection

and disconnection of cables to battery terminals is one of the most common causes of sparks.

7.8 Avoid using airtight battery compartments. In some cases, gases (oxygen, hydrogen) may be given off, and there is a danger of the batteries bursting or rupturing in the presence of a source of ignition (sparks generated by a motor switch, etc.).

7.9 Wear eye protection when working around batteries and prevent eyes and skin from contacting electrolyte. Batteries contain corrosive acid and produce explosive gas a byproduct of their operation. Acid on the skin should be neutralized with a solution of baking soda and water made into a paste. In case acid contacts eyes, flush with clear water and seek medical attention immediately.

7.10 Prevent batteries from vibration, collision and crush to preempt short circuit caused by distortion.

7.11Prevent batteries from improper termination of charge, including overtime termination (6.5.10), overvoltage termination (6.5.2 & 6.5.3) and overcurrent termination (6.5.8). Improper termination of charge may occur when the battery system malfunctions. Any charging process regardless of the charge mode should be terminated before the problem is identified and resolved. The BMS should limit charge current to 0 or lock down the battery system to preempt further

charging process, while also delivering warning messages to operators.

7.12 The test described in 2.6, if incorrectly performed, may cause fire or explosion, and thus requires professionals with proper equipment and laboratory.

8. Warnings & Hazards

8.1 Warning Notice

Warning

Due to various hazards, precautions must be taken when operating and maintaining

the battery system.

The test described in 2.6, if incorrectly performed, may cause fire or explosion.

Proper protective equipment is needed to operate the battery system.

Battery system maintenance requires professionals with effective safety training.

8.2 Types of hazard

The customer should acknowledge the following types of hazards in battery operation.

8.2.1 Shock hazards occur when electric current passes through a person. Shocks range in severity from painful, but otherwise harmless, to heart-stopping lethality.

8.2.2 Chemical hazard caused by exposure to electrolyte.

8.2.3 Thermal hazards occur when electric power causes undesired heating effects whenever electric energy is converted to thermal energy at a rate faster than it can be safely dissipated.