Customized Medical Equipment Batteries With SMBus Communication
- long life cycle( 2000cycles @ 100%DOD)
- super quick charge/discharge performance
- safe pressure valve design ( no explosion, no fire)
- high energy density
- low self-discharge( <3% per month)
- 1/3 weight & 1/2 volume of lead acid battery
- eco-friendly
- high consistency
- no memory effect
- easily replace lead acid battery
1. Battery Pack Brief Introduction
This specification applies to the TB1250F-P105A battery manufactured by Shenzhen Topband Battery Co., Ltd,
Describes the type and size, performance, technical
characteristics, warning and caution of the rechargeable cell. It is strictly prohibited any series or parallel between the
battery pack. If the user needs to support the series parallel use,
please contact us.
1．1 Battery Type
LiFePO4 (LFP)
1．2 Reference Standard
1．3 Product SPEC
12V/50Ah 4S2P
1．4 Cell Brand and Model
TB-027070180C-Fe-25Ah
1．5 Period of Warranty
Period of Warranty reference to the contract
1．6 Battery Specification Amendment
If the raw materials, production processing, production system or
battery usage environments & other conditions need to be change,
the amendment side needs provide the written advice to the other
side, only the both sides come to an end, the amendment will be
effective.
2． Battery Pack Basic Features
| NO. | Items | Characteristics | Testing Methods |
| 1 | Nominal Voltage | 12.8V | Follow GB/T18287-2013> |
| 2 | Nominal Capacity | 50Ah | Follow |
| 3 | Minimum Capacity | 47.5Ah | Follow |
| 4 | Battery internal Impedance | Internal Impedance≤50mR | Internal Impedance Testing Machine(1kHz ) |
| 5 | Shipment Voltage | 12.8~13.6V | Multi-meter |
| 6 | Dimension | Length | 187*166*117mm(MAX) | Vernier caliper |
| Width |
| Height |
| gross weight | 5.8±0.3kg | electronic scale |
| 7 | Working Temperature | Charge | 0~45℃,45~85%RH | Temperature & Humidity Instruments |
| Discharge | -20~55℃,45~85%RH |
| 8 | Storage Temperature & Humidity Range | Short: above one month | -20~+55℃,45~85%RH | Temperature & Humidity Instruments |
| Medium: above three months | 0~+45℃,45~85%RH |
| Long:above one year | +5~+30℃,45~85%RH |
| 9 | Allowed maximum continuous charge current | 30A | Multi-meter |
| 10 | Allowed maximum continuous discharge current | 30A | |
| 11 | Allowed maximum reverse charge voltage | NO Allowed | / |
| 12 | Allowed maximum charge voltage | 14.6±0.1V | Multi-meter |
| 13 | Discharge cut-off voltage | ≤10V | Multi-meter |
3. Battery Pack Electrical Characteristics
3.1 Testing Conditions (Unless Specially Requirements)
Temperature:20±5℃ Related Humidity: 45~75%
Atmosphere Pressure: 86~106kPa
The testing items under the Shipment Voltage(12.8～13.6V)
3.2 Battery Pack Electrical Characteristics
| No. | Items | Standards | Testing Methods |
| 1 | Internal Impedance | Impedance ≤50mR | Under 20±5℃ Environment Temperature , the Usage Frequency of Fully
Charge( 1KHz) , Use AC Internal Impedance test machine to test |
| 2 | Nominal Capacity | 50Ah | Rest for 0.5~1 hour after fully charge, Using electrical loader to
connect with the battery output port, and discharge with constant
current 0.2C till it can’t discharge. Do the cycle three times, if
there is one time that the discharge time is equal or more than
285minute , you can stop. |
| 3 | Short circuit protection | No load ability after short-circuit .comeback capability of loading
after remove the lead away, | Short the pack with the lead (<50mR). If remove the lead away,
connect the electronic loader with P+, P- of protection board
again, so load ability comes back. |
| 4 | Allowed Maximum continuous charge Current | 30A | charging with this current for more than 0.5h and the added
temperature of battery pack less than 20℃. |
| 5 | Allowed Maximum continuous discharge Current | 30A | Discharging with this current for more than 0.5h and the added
temperature of battery pack less than 20℃. |
| 6 | Over Current Protection | 120~150A | Using electron load connect with output side, discharge with 120A for about 2sec Discharge with 150A for less than 100 millisecond, |
| 7 | the delay time of over current protection | 20~100ms | Using electron load connect with output side, discharge with more
than 150A and record the voltage wave of output side with oscillograph .
Numerating the time of voltage from wave to zero for voltage |
| 8 | cycle life | Discharge Capacity ≥80% | Discharge it with the current of 0.2C to the cut-off voltage, and
store it for 15min.Charge a battery with the current of 0.2C, then
keep the voltage and current constant and continue to charge it
until completed . After storing the battery for 15min. The test is
to be conducted as per the above cycles. The cycle should be 1000
times. At the 1001 times discharge capacity should not be less than
≥80% with 0.2C. |
| 9 | Discharge Temperature Characteristics | The ratio between discharge capacity and charge capacity should be
not less than the following value | At 20±5℃ discharge the battery with the current of 0.2C to the
cut-off voltage and record charge capacity. Store the battery at
the following temperature for 2h and discharge the battery with
0.2C to the cut-off voltage. |
| Discharge Current | Discharge Temperature |
| -20℃ | 0℃ | 25℃ | 55℃ |
| 0.2C | 60% | 80% | 100% | 95% |
| 10 | Charge Retention | remain capacity≥90% | At 20±5℃ completely charge and store it for 28days,and then
discharge it with 0.2C to the cut-off voltage. (We suggest charge
the battery to 12.8~13.6V every three months) |
| 11 | Over Discharge Protection furbish | Charging With 0.2C | Charge the battery with 0.2C for 5min and measure the output
voltage (≥8V)of the battery pack. The battery should have load . |
4. SMBus
The battery pack compatible with SBD ata v1.1 instructions. The
host sends a corresponding instruction to the battery pack to
receive the battery information.
In addition, the battery pack can convey the host for the radio
alarm and charging information. The following chart is the
summarizes for the SBD ata.
5. Battery Pack Reliability Test
5.1 Testing condition (Unless Special Requirements)
Temperature:20±5℃ Relative Humidity: 45~75%
Atmosphere Pressure: 86~106kPa
All testing under full capacity(Battery pack voltage13.2-13.6V)
5.2 Reliability Test
| No. | Items | Standards | Testing Methods | |
| 1 | Vibration Testing | The appearance of battery should not leakage, break or explosion | Fix a charged battery on a vibrating table, vibrate it for 90
minutes in three mutually perpendicular directions at the 0.8mm
resonance. The frequency is to be varied at the rate of 1hz/min
between 10 and 55 hertz. | |
| 2 | High Temperature Discharge Testing | The battery should be no remarkable breakage, distortion. Discharge
time should not less than 255mins | Place a full charged battery under the environments of 55℃ for 2
hours. Discharge it at the current of 0.2C to the cut-off voltage.
Then keep it at 20℃±5℃ for 2 hours. | |
| 3 | Low Temperature Discharge Testing | The battery should be no remarkable breakage, distortion. Discharge
time should not less than 180 minute | Place a full charged battery under the environments of -20℃ for
15-24 hours. Discharge it at the current of 0.2C to the cut-off
voltage. Then keep it at 20℃±5℃ for 2 hours. | |
| 4 | Constant Humidity & Temperature Testing | The battery should be no remarkable breakage, distortion. Discharge
time should not less than180mins | Place a full charged battery under the environments of 40℃ and 90%
- 95%RH for 48 hours. And keep it in the room temperature for 2
hours. Then discharge it at the current of 0.2C to the cut-off
voltage. |
| 5 | High & Low Temperature Storage | The battery should be no remarkable breakage, distortion. And
charge/discharge normally | Place a full charged battery in a oven with 55±2℃ for2 hours, then
keep it under 20±5℃ for 4hrs, then place it in a oven with -20±2℃
for 2 hours, then keep for 4 hours under 20±5℃, cycle as high
temperature-normal temperature-low temperature-normal
temperature-high temperature for 10 times |
6. BATTERY PACK SAFETY TEST
6.1 Testing condition (Unless Special Requirements)
Temperature:20±5℃ Relative Humidity: 45~75%
Atmosphere Pressure: 86~106kPa
All testing under full capacity(Battery pack voltage13.2-13.6V)
6.2 Battery Pack Safety Test
| No. | Items | Standards | Testing Methods |
| 1 | Short-Circuit | The battery should be no remarkable breakage, distortion. And
charge normally. | Use a resistor with less than 0.05Ω to make the battery short
circuit for 1 hour. The appearance and characteristics are normal. |
| 2 | Over Discharge Protection Test | The battery should be no remarkable breakage, distortion.
Appearance and charge are normal. | Discharge the battery at the rate of 0.2C with the load of 30Ω for
24h . Charging for 10sec with specified adapter , and check the
voltage(≥8V) |
| 3 | Impact Test | The battery should be no explosion or catch fire | Place a full charged battery on a flat and put a stainless steel
stick (Diamond 7.9mm) in the middle of the battery upright . Beat
the steel stick with 9.1Kg |
7. Pack diagram
Connection Ports Instruction:
1. Pack Output Positive and Negative Electrode: The same port for
charge and discharge, Anderson line for
30A output current, red for P+ and black for P- ;
2. Communication Interface Type: The following figure Interface
(See graph below): The Communication need 3
Pin wire: GND/ CLK/ DATA the Sequence of the 3 lines as follow:
