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|Rated Voltage:||12.8V||Rated Capacity:||20Ah|
|Normal Charge Voltage:||14.6±0.1V||Max Charge Current:||20A|
|Allowed Max Discharge Current:||30A||Internal Resistance:||≤50mΩ|
|Weight:||3.0kg||End Of Discharge Voltage:||8.0V~14.6V|
Lithium Battery 12v20ah Bluetooth Hardware Smart Battery Solar Street Light UPS
1. About us
Shenzhen Topband Battery Co., Ltd, a company professional to do LiFePO4 battery, which is founded in 1996 and listed in Shenzhen in 2007. There are over 300 R&D engineers and about 3,000 employees in the 70,000 square meters Topband industrial park. We can provide One -Stop Solution of new energy, from cell, BMS/PCM to battery pack assembling.
This rechargeable LiFePO4 battery pack TB-BL1220F-S115D supports Bluetooth communication function. Through Android and IOS APP, can read the battery status and information. Especially due to the Android system’s openness, different smart phone manufacturer will have their own different Bluetooth hardware version and customized feature Android systems. It is necessary for the customer to confirm whether the phone is compatible for the APP.
|4||Battery operation temperature range @charging||0~45℃|
|5||Normal charge voltage||14.6±0.1V|
|6||Recommended float charge voltage(for Standby use)||13.9±0.1V|
|7||Allowed MAX charge current||20A@Battery initial Temp 25±5℃|
|8||Recommended charge current||≤10A|
|9||Battery operation temperature range @discharging||-20~60℃|
|10||Output Voltage Range||8.0~14.6V|
|11||Allowed discharge current||30A withstand 30min @Battery initial Temp 25±5℃|
|12||Pulse discharge current||55A withstand 3s|
|13||Discharge Cut-off voltage||8.0V|
|16||Storage Temperature & Humidity Range||Short: within one month||-20~35℃, 45~75%RH|
|Long term: above one month||-10~30℃, 45~75%RH|
|17||Self-discharge rate||Residual capacity||≤3% per month; ≤15% per year|
|Reversible capacity||≤1.5%per month; ≤8% per year|
3. Test conditions
Testing Conditions: Ambient Temperature: 25±5℃; Huminity:45%~75%.
Normal charge:Charge battery under CC(0.33C)/CV(43.8V) mode until over charge protection or the charge current reduce to 0.05C, and then rest for 1h.
4. Product Performance
|1||Internal Impedance||≤50mΩ||Test the internal resistance of 50% SOC battery pack with 1 kHz AC internal resistance test instrument.|
|2||Capacity||≥20Ah||Rest for 1 hour after fully charged, then discharge with 0.33C current until the battery reaches the discharge cutoff voltage. Repeat above process for three times, if the discharge time is not less than 180 minutes, you can stop and define the Discharging current*time value (Ah) as battery capacity.|
Short circuit protection
|Automatically cutoff discharging when short circuit, and release after remove the lead.||Connect the positive and negative of this battery pack through a lead with the resistance less than 5mΩ.|
|4||MAX charge Current||20A||Charging with this current for more than 0.5h and the added temperature of battery pack less than 20℃.|
|5||MAX discharge Current||30A||Discharging with this current for more than 0.5h and the added temperature of battery pack less than 35℃.|
Cycle life (DOD%100)
|≥2000cycle||Discharge with the current of 0.5C until it can’t discharge, and then rest it for 1h. Charge the battery following CC(0.33C)/CV(14.6V) mode to full capacity, and then rest it for 1h. Repeat above process until full charged capacity is no more than 80% of normal value. Accumulated times is defined as cycle life.|
|-20℃||≥70%||At 25±5℃ discharge the battery with the current of 0.33C to the cut-off voltage. Store the battery at various temperatures for 2h and discharge the battery with 0.33C to the cut-off voltage. Record the ratio between discharging & charging capacity.|
|8||Charge Retention ability||remain capacity≥90%||Charge the battery to full capacity and store it for 28days, and then discharge it with 0.33C to the cut-off voltage.|
6. Bluetooth introduction
Topband Bluetooth is a technology that allows users to connect Topband battery directly with their mobile phones. Users can use Bluetooth to get the information( Such as the SOC, operating temperature, cycle times, voltage, capacity, etc) of the battery clearly.
Setting up the connection between the battery and the phone is quick and easy. Users just need to download the TB APP from Google play/ APP store, and operate it near the battery. The interface of the APP can be also customized if needed.
Compared to the other communication ways, it is wireless and of high security, which makes Bluetooth become more and more porpular among the world.
If any interest, do not be hesitate to contact with us! We will offer professional service to our customers!
Contact Person: Wendy Chen