Telecom Communication Batteries 48V 50Ah LFP Battery 3U Rack
About us
Shenzhen Topband Battery Co., Ltd. is an expert manufacturing
LiFePO4 battery, who founded in 1996 and listed in Shenzhen of
China in 2007. There are over 600 R & D engineers and about 6,000
experienced workers, occupies 100,000 square meters Topband
industrial park. We can provide One-Stop Solution of renewable
energy, from cell, BMS/PCM to battery pack assembling.
Our culture is respect and agree with the difference culture and
habit from all over the world, make customer success, developing
with our customers, continue to self-improvement, commitment to
excellence.
Our mission is creating valuable products to win the market for
customer, our vision is to a respected intelligent Eco-friendly
energy provider.
1. General Information
This specification defines the performance of Telecom Communication Batteries 48V 50Ah LFP Battery 3U Rack TB4850F -T110D manufactured by TOPBAND, describes the type, performance,
technical characteristics, warning and caution of the battery pack.
2. Battery Specification(@ 25±5℃ (68℉~86℉)
| NO | Items | Characteristics |
| 2.1 | Normal capacity | 50Ah |
| 2.2 | Nominal energy | 2.56KWh |
| 2.3 | Nominal voltage | 51.2V (LFP-16S) |
| 2.4 | Internal resistance | ≤50mΩ @1kHz AC |
| 2.5 | Normal charge voltage | 58.4±0.3V |
| 2.6 | Float charge voltage(for Standby use) | 55.2±0.3V |
| 2.7 | Allowed MAX charge current | 50A |
| 2.8 | Recommended charge current | ≤25A |
| 2.9 | Allowed MAX discharge current | 50A |
2.10 | End of discharge voltage | 40.0V |
| 2.11 | Dimension | Length 482±2 mm |
| height 133±2 mm |
| Depth 360±2 mm |
| 2.12 | Weight | Approx. 28kg (61.7Ib) |
| 2.13 | Working temperature | Charge | 0～45℃ (32℉~113℉) |
| Discharge | -20～60℃ (-4℉~140℉) |
| 2.14 | Self-discharge rate | Residual capacity | ≤2%/Month; ≤10%/ year |
| Recover capacity | ≤1%/Month; ≤6%/ year |
| 2.15 | Storage environment | ≤1month | -20～35℃ (-4℉~95℉), 45～75%RH |
| ≥3month | -10～35℃ (14℉~95℉), 45～75%RH |
| Recommend environment | 15～30℃ (59℉~86℉), 45～75%RH |
3. Electrical Characteristics & Test Condition
Testing Conditions: Ambient Temperature: 25±5℃ (68℉~86℉); Huminity:45%~75%.
Normal charge:Charge battery under CC(0.33C)/CV(58.4V) mode until
over charge protection or the charge current reduce to 0.05C, and
then rest for 1h.
| NO | Items | Criterion | Condition |
| 3.1 | Normal Capacity | 50Ah | After Normal charge, discharge @0.33C current to the end of
discharge voltage. |
| 3.2 | Internal Impedance | ≤50mΩ | @50% SOC @1kHz AC internal resistance test instrument. |
| 3.3 | Short circuit protection | Auto cutoff load when short circuit | Connect the positive and negative of this battery pack through a
lead with 0.1Ω resistance. |
| 3.4 | Cycle life @DOD100% | ≥2000 cycles | After Normal charge,discharge @0.33C current to the end of
discharge voltage. Repeat above process until discharge capacity
reduce to 80% of initial value. |
| 3.5 | @0.33C Discharge temperature characteristic@0.33C | -20℃ (-4℉) | ≥70% |
Capacity @specified temperature Capacity @ 25℃ (77℉)
|
| 0℃ (32℉) | ≥80% |
| 25℃ (77℉) | ≥100% |
| 55℃ (131℉) | ≥95% |
| 3.6 | Capacity retention rate | remain capacity ≥96% | After normal charge, store the battery @25±5℃ (68℉~86℉) for 28days, then discharge capacity @0.33C,the retention capacity
accord with criterion. |
4. Circuit Protection
The batteries are supplied with a LiFePO4 Battery Management System
(BMS)that can monitor and optimized each single prismatic cell
during charge & discharge, to protect the battery pack overcharge,
over discharge, short circuit. Overall, the BMS helps to ensure
safe and accurate running.
| No | Item | Content | Criterion |
| 4.1 | Over charge | Over-charge warning for each cell | 3.60±0.03V |
| Over-charge protection for each cell | 3.70±0.03V |
| Over-charge release for each cell | 3.38±0.05V |
| Over-charge release method | Under the release voltage |
| 4.2 | Over discharge | Over-discharge warning for each cell | 2.80±0.05V |
| Over-discharge protection each cell | 2.50±0.05V |
| Over-discharge release for each cell | 2.90±0.10V |
| Over-discharge release method | Charging |
| 4.3 | Over current | Charge over current warning | 55±3A |
| Charge over current protection | 60A±3A |
| Charge over current release | Discharge or auto release after 1min |
| Discharge over current warning | 55±3A |
| Discharge over current protection | 60A±3A |
| Discharge over current release | Charge or auto release after 1min |
| Short circuit protection | Available |
| 4.4 | Temperature | Charge over temperature protection | Protect@55±3℃; Release@50±3℃; |
| Charge under temperature protection | Protect@0±3℃; Release@5±3℃ |
| Discharge over temperature protection | Protect@65±3℃; Release@60±3℃; |
| Discharge under temperature protection | Protect@-20±3℃; Release@-15±3℃; |
5. User guide
5.1 TB48XXF-T110X Operation principle and Wiring hint
Input AC 220V, after rectification power module, output DC 48V.
When the power grid normal, the battery will supply power according
to system requirement, and to be charged at same time; when power
off, the battery will supply energy, to make sure the DC power
system working normally, to realize uninterruptible power supply.
The power supply has second disconnection function, when the
battery voltage is low, the battery output would be cut off to
protect battery.
5.2 Operation Introduction
Reset RS485 RS232 Dial switch RUN LED alarm LED SOC LED
5.3 Sleep Mode
The system would go into low-consumption mode in any of the
following conditions:
- Single module or the whole system over discharge protection not
recovered in 30s
- Press the keys for 3s
- The minimum single voltage lower than sleep voltage, and the
lasting time reach sleep delay time( no communication, no
protection, no balance, no current at same time).
- Standby more than 24h( no communication, no charge or discharge, no
AC input).
- Force shutdown through upper-computer software.
Before sleep mode, please make sure there is no input voltage,
otherwise it can no go to sleep mode.
5.4 Wake Up
When the system is in low-consumption mode, the system would exit
low-consumption mode and go into normal running mode in any of the
following conditions:
- connect to charger, and the charger output is more than 48V.
- Press the keys for 3s
- Connect to communication cable, open upper computer software( if it
goes to sleep mode due to over discharge protection, this method
would not wake up the circuit board).
Notice: single model or the whole system goes to low-consumption
mode after over discharge protection, it would be wake-up every
4hs, to open discharge MOS. If it can be charged, it would exit
sleep mode and start normal charge; if it fails to be charged after
10times of wake-up automatically, there would be no automatic
wake-up.
5.5 Installation Drawing
Case dimension: 482(Width) * 360(Depth) * 133(height) mm；
Handle Depth:35mm; weight:Approx.28kg.
