TTWEN LiFePO4 100Ah Battery Pack User Manual

TTWEN LiFePO4 100Ah Battery Pack

https://lifepo4store.com

info@lifepo4store.com

Swalle Technology Co., Ltd.

PRODUCT OVERVIEW

BATTERY

Combination: 12.8V200Ah
Dimension: L521W238H220mm
Plastic Shell Color: Black

TERMINAL & POST BOLTS

Terminal Size:
M8 (1.25mm Metric Thread)

Post Bolts:
M8 (1.25mm Metric Thread*12mm Bolt Length)

(The bolts can be replaced with M8 bolts of other lengths based on actual needs.)

GENERAL INFORMATION

NOTICE BEFORE USING

• Step 1: CONTACT us at info@1ifepo4store.com to activate the THREE-YEARS WARRANTY

• Step 2: PULL OUT Insulating Plugs

• Step 3: TIGHTLY SCREW IN Post Bolts
  Please tightly screw in the post bolts. Having loose battery terminals will cause the terminals to build up heat resulting in damage to the battery.

• Step 4: PUT ON Insulating Covers
  Please put on the insulating covers to avoid metal or conductive objects touching the positive and negative terminals of the battery at the same time, otherwise it is likely to cause a short circuit.

• Step 5: TEST The Battery Voltage with Multimeter
  12V To Step6
  <12V Contact us at info@lifepo4store.com to help solve the problem.

• Step 6: FULLY CHARGE The Battery Separately (Refer to Page 06 for battery charging methods)

• Step 7: CONNECT To Use

BATTERY-PACK MAIN PARAMETERS

200A
Max. Continuous Charge /                                  Discharge Current| 200A
Max. Discharge Current 5 Seconds| 400A
Max. Continuous Load Power| 2560W
Cycle Life| > 4000 times
Internal                  Impedance| < 40m0
Battery Pack Case| Acrylonitrile Butadiene Styrene (ABS) Plastic
Protection Class| IP65
Weight| 41.88i/b19kg

Dimension

| L20.51W9.37H8.66 inch
L521W238H220mm

Temperature Range

| Normal-Ch arge:OC to   S0 °C / 3 2 °F to                                  1 22°F
Normal-Discharge:-20 °C     to 6 0 °C / – 4 °F to                                                 140°F
Self – Heat ing Charge: -20°C ,,. __  S0 °C / – 4 °F – 12 2 °F
 | Self -H eat ing Discharge: -20°C ,, 6 0 °C / -4 °F -1 4 0 °F
 | St o rage :- 10 °C  to   S0 °C  / 1 4°F                         to   122°F

CAUTIONS

• Please charge with a dedicated lithium battery charger;
• Do not reverse the positive and negative poles;
• There are safety devices in the battery pack. To ensure safety, do not dissect or change the structure of the battery;
• It is forbidden to directly connect the positive and negative terminals with metal;
• It is strictly forbidden to immerse the battery in water;
• It is strictly forbidden to drop, impact, squeeze, or puncture the battery;
• If the battery pack is not used for 3 months, please put the battery pack fully. When it is not in use, it should be placed in a cool and dry environment.

THINGS TO KNOW BEFORE USING

• Always put on the insulating covers on the post bolts to avoid metal or conductive objects touching the positive and negative terminals of the battery at the same time, otherwise it is likely to cause a short circuit.

• Install the battery upright with post bolt facing up, and it could not be mounted upside down. If you need to mount the battery at its side, please contact
  confirm the direction.

• Tightly screw in the post bolts. Having loose battery terminals will cause the terminals to build up heat resulting in damage to the battery.

• Th is battery is not intended to be used to start any devices, please DO NOT use it as a starting battery.

• Suggestions for Long-term Storage:

  • Temperature
    The battery can be operated at a temperature of-20 °C to 60 °C/-4°F to 140F, and a temperature between 10 °C to 35 °C/S0°F to 95°F is ideal for long-term storage. Store in a fireproof container and away from children.

  • Capacity
    For a longer-lasting product, it is best to store your battery at a 50% charge level and recharge every three months if it is not going to be used for a long time.

CHARGING METHODS

THE VOLTAGE WHEN CHARGING & DISCHARGING
Based on the characteristics of Lithium Iron Phosphate {LiFePO4) batter- ies, the voltage measured by all LiFePO4 batteries during charging/dis- charging is not the real voltage of the battery. Therefore, after charging/discharging and disconnecting the battery from the power source, the voltage of the battery wil I gradually drop/increase to its real voltage.
If you need to test the real voltage of the battery, please disconnect all the connections to the battery and test its voltage after putting it aside for over 30 mins.

Tips When Testing The Battery Voltage by A Multimeter
(DPut the red probe (+) tightly on the positive terminal (not the post bolts), and the black probe (-) on the negative terminal.
®Do not touch the metal part of the probes with your hands during use.

Battery Charging Logic
The material characteristics of the Li FePO4 battery determine that its charging curve is obviously different from that of a lead-acid battery. Compared with a lead-acid battery, the LiFePO4 battery has a simpler charging process and mode. Therefore, it is recommended to select LiFePO4 for your charging mode.
If LiFePO4 mode is not available, please refer to the recommended parameters on Page 10 for setting.

LiFeP04 Battery Charging Mode

• CC (Constant Current} Phase (Tl)
  In the beginning, a discharged battery will be charged with a constant current and voltage will be climbing steadily until reaching the constant voltage setpoint which varies for different charging methods.

• CV (Constant Voltage} Phase (T2)
  The battery maintains a constant voltage during this phase while the current gradually decreases to 6A (0.02C) which is also known as tail current. At this point, the charging is cut off and the battery is fully charged.

SOLAR PANEL(S) & CONTROLLER

Solar Panel

• Recommend Power: >900W
• The battery can be fully charged in one day (with effective sunshine 4.Shrs/day) by 900W solar panels.
• It may take more than one day to fully charge the battery by 900W solar panels since the duration and intensity of light would be a great factor for their charging efficiency.

Controller

Recommend Charging Current:

40A(0.2C)| The battery will be fully charged  in  around Shrs to 100% capacity
---|---
100A(0.SC)| The  battery will be fully  charged  in  around 2hrs to around 97%         capacity

Recommend Charging Mode: 12V {14.6V) LI {LiFePO4)

Controller Settings
Refer to the below parameters if you need to manually set up your controller.
As different types of batteries have different charging modes (refer to Page 09), it is recommended to set only the following parameters for LiFePO4 batteries. The settings for other types of batteries do not apply to LiFePO4 batteries except for the following settings.

CHARGING

| charge/Bulk/Boost                                    Voltage| 14.4V/14.6V
---|---|---
Absorption Voltage| 14.4V/14.6V
Over  Voltage            Disconnect| 15V
Over   Voltage            Reconnect| 14.2V
Tail Current| 4A{0.02C)

DIS- CHARGI NG

| Under Voltage Warning| 11.6V
---|---|---
Under Voltage Recover| 12V
Low  Voltage Disconnect| 10.8V
Low Voltage Reconnect| 12.4V

BATTERY CHARGER

Use 14.6V lithium iron phosphate (LiFePO4) battery charger to maximize the ca pa city.

• Recommend Charging Voltage: Between 14.2Vto 14.6V

• Recommend Charging Current:

• 40A{0.2C)
  The battery will be fully charged in around Shrs to 100% capacity

• l00A{0.SC)
  The battery will be fully charged in around 2hrs to around 97% capacity

Tips

1. Connect the charger to the battery before connecting it to the grid power in case of sparks.
2. It’s recommended to disconnect the charger from the battery after fully charging.

ALTERNATOR/GENERATOR

TTWENbattery can be charged by an alternator or generator.
If the alternator/generator supports DC output, a DC-to-DC charger needs to be added between the battery and the generator; if the alternator/gen- erator supports AC output, please refer to the recommendations in “Battery Charger” above to add a suitable battery charger between the battery and the generator.

Recommend Charging Voltage: Between 14.2V to 14.6V
Recommend Charging Current:

60A(0.2C)

|

The battery will be fully charged  in  around Shrs to 100% capacity

---|---

lS0A(0.SC)

|

The  battery will be fully charged in  around 2hrs to                                                    around 97%                                                    capacity

HOW TO ESTIMATE THE BATTERY CAPACITY

STATE OF CHARGE (SOC)
The battery capacity could be roughly estimated by its rest voltage (not charging/discharging voltage). As there are subtle differences in the voltage of each battery, the below parameters are for reference only.
Rest Voltage : The voltage needs to be tested at rest (with zero current) after 30 mins of disconnecting from the charger & loads.

disconnecting from the charger| & loads.|
---|---|---

CAPACITY

|  |

CHARGE VOLTAGE

|
100%|  | 13.SV|
99%|  | 13.4V|
90%|  | 13.3V|

70%

|  |

13.2V

|
40%|  | 13.lV|

30%

|  |

13.0V

|
20%|  | 12.9V|
10%|  | 12.8V|
1%|  | 10.8V(recommend low voltage disconnect|
0%|  | 9.SV|

SERIES/PARALLEL CONNECTION

THE PREMISE OF CONNECTION

To connect in series or/and parallel, batteries should meet the below conditions;

• identical batteries with the same battery capacity (Ah) and BMS (A);
• from the same brand (as lithium battery from different brands has their special BMS);
• purchased in near time (within one month).

LIMITATION FOR SERIES/PARALLEL CONNECTION

Support connecting up to 16 identical batteries for up to

• 4 in series as 48V (51.2V) battery system/
• 4 in parallel as 1200Ah battery system.

HOW TO CONNECT BATTERIES

Accessory Recommendation

• Battery-to-Battery Connection Cable: 2*6AWG Copper Cable
• Total Input & Output Connection: Adding two copper bars except for the cables. Step 1: Refer to Page 14-16 to finish your battery-to-battery connection.
  Step 2: Connect all the positive output cables of the batteries to one copper bar.

• If the positive(+) of the battery is connected to the negative(-) of other batteries (i.e. in series connection), the + cannot be connected to the copper bar, otherwise the battery system will fail to connect in series.)

• Step 3: Connect the O of the load to the copper bar.
  The cable gauge used in this step should be able to support the total input & output current of the entire battery system.

• Step 4: The = of the battery system and load are also connected to another copper bar following the above steps.

Step 1 Wear Insulating Gloves
Wear Insulating Gloves for protection before connecting. Please pay attention to operation safety in the process of connection.

Step 2 Voltage Balancing Before Connection
Below two steps are necessary to reduce the voltage difference between batteries and let the
battery system perform the best of it in series or/and in parallel.

• Fully charge the batteries separately (voltage at rest: >13.4V)
• Connect the batteries one by one in parallel, and leave them together for 12~24 hrs.
• They can then be connected in series or parallel.

Step 3 Battery-to-Battery Connection

Connect Batteries in Series

After series connection, the voltage of the battery system will be doubled according to the number of batteries you connect.
E.g. If two 12V 200Ah batteries are connected in series, the battery system will be 24V (25.6V) 200Ah.

Connect Batteries in Parallel
Refer to Page 11 for total input & output connection

After parallel connection, the capacity of the battery system will be doubled according to the number of batteries you connect.
E.g. If two 12V 200Ah batteries are connected in parallel, the battery system will be 12V (12.8V) 400Ah.

Connect Batteries Both in Series & Parallel Optimal Connection Method Recommendation

1. Connect the batteries in parallel
2. Connect the paralleled battery systems in series .

Connect the positive of battery to a copper bar and the of the load to the same copper bar. And then connect the negative of to another copper bar and the= of the load to the same copper bar.

Refer to Pagels for 2S2P, 2P4S battery system wiring diagram

As

Step 4 Rebalancing Every 6 Months
It is recommended to rebalance the battery voltage every six months following Step 2 on Page 13 if you’re connecting multiple batteries as a battery system, as there might be voltage differences after six months of the battery system
running.

Wiring Diagrams

2S2P

| Battery System| 24V(25.6V)400Ah
---|---|---
Energy| 10,240Wh

Max. Continuous Charge/ Discharge Current

| ****

200A

Max. Continuous Load Power| 5120W

2P4S

| Battery System| 48V (51.2V)400Ah
---|---|---
Energy| 20,480Wh

Max. Continuous Charge/ Discharge Current

| ****

200A

Max. Continuous Load Power| 10,240W

4P2S

| Battery System| 24V (25.6V)800Ah
---|---|---
Energy| 20,480Wh

Max. Continuous Charge/ Discharge Current

|

200A

Max. Continuous Load Power| 10,240W

INVERTER SETTINGS

METHOD ONE (RECOMMEND)
Select “12V (14.6V) LI (LiFePQ4) Mode”

METHOD TWO
If method one is not available, select “User Mode” to enter values according to below parameters.

CHARGING

| Charge Voltage| 14.6V
---|---|---
Over Voltage Disconnect| 15V
Over Voltage Reconnect| 14.2V

DIS-CHARGING

| Under Voltage Warning| 11.6V
---|---|---
Under Voltage Recover| 12V
Low         Voltage Disconnect| 10.8V
Low Voltage Reconnect| 12.4V

The above setting parameters apply to common inverters on the market (such as Victron, Renogy, Growatt, Xantrex, Go Power, Lux Power, etc.). Different brands have slightly different descriptions or naming methods for each parameter. Please directly set the parameters with the same meaning.
If the inverter parameters to be set are special or cannot correspond to one of the above items, please contact info@lifepo4store.com for confirmation.

WHAT TO DO WHEN THE BATTERY STOPS WORKING?

It has 85% chances that BMS has shut it off for protection, and you could try one of below ways to activate the battery.

GENERAL STEPS
If the BMS has cut off the battery for protection, follow the below steps to activate it.

• Step 1: Cut off all the connections from the battery

• Step 2: Leave the battery aside for 30mins
  Then the battery will automatically recover itself to normal voltage (>10V) and can be used after fully charged.
  If the battery is unable to recover itself after the above steps, please try activating by ONE OF

• BELOW TWO METHODS.
  After activated (voltage>l0V) and fully charged by the normal charging method, it can be used normally.

• Method 1
  Use a charger with a OV charging function (D to fully charge the battery

• Method 2
  Connect an 18V~36V solar panel to charge the battery for 3~1os in sunny daytime.

ATTENTION
Caution: Risk of Fire, Explosion or Burns

• DO NOT Short circuit
• DO NOT Reverse connections from the charger to the battery
• DO NOT Disassemble
• DO NOT Throw into fire or incinerate
• DO NOT Heat above 70 °C/lS8°F

WARNING

BATTERY DISPOSAL
The electrodes of the waste battery should be wrapped with insulating paper to prevent fire and explosion.

PROHIBITION OF DISASSEMBLY

• Never disassemble the cells.
• The disassembling may generate an internal short circuit in the cell, which may cause gassing, firing, explosion, or other problems.
• The electrolyte is harmful.
• Li-Fe battery should not have liquid from electrolyte flowing, but in case the electrolyte comes into contact with the skin, or eyes, physicians shall slush the electrolyte immediately with fresh water and medical advice is to be sought.

PROHIBITION OF DUMPING OF CELLS INTO WATER
Do not soak the battery in which the liquid, like water, seawater and non- alcoholic drinks, fruit juice, coffee or other drinks.

PROHIBITION OF DISASSEMBLY
If any abnormal features of the cells are found such as damages in a plastic envelope of the cell, deformation of the cell package, smelling of an electrolyte, an electrolyte leakage and others, the cells shall never be used anymore.
The cells with a smell of the electrolyte or a leakage shall be placed away from the fire to avoid firing or explosion.

PROHIBITION OF USING IN BELOW PLACES
Do not use the battery in a place with strong staticelectricity and a strong magnetic field, otherwise, it is easy to damage the battery safety protection device and bring hidden danger.

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info@lifepo4store.com

Swalle Technology Co., Ltd.

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