Reliable 3.6V 550mAh Ni-MH Backup Power for Automotive T-Box & eCall Systems
The Ni-MH AAA550mAh 3.6V battery pack is a premium, high-reliability power solution specifically designed for automotive telematics. Engineered to meet rigorous industry demands, this pack ensures that critical vehicle systems, such as emergency eCall and GPS tracking, remain operational even during primary power loss.
Key Engineering Advantages:
Automotive Temperature Tolerance: Delivers a maximum continuous discharge current of 550mA (1C) across a wide temperature range of -20°C to 75°C. It is engineered to withstand the harsh environments typical of automotive dashboard or chassis installations.
Proven Longevity: Offers a reliable cycle life of ≥ 500 cycles, fully compliant with IEC 61951-2 testing standards. Its excellent self-discharge retention maintains ≥ 60% capacity after 28 days of storage at 20°C.
Advanced Safety Integration: Equipped with a built-in 10K±3% B=3435 glass-sealed NTC thermistor, allowing your T-Box BMS to precisely monitor battery temperature for safe charging.
Ready-to-Install Design: The pack comes perfectly configured in a side-by-side layout with a maximum thickness of 11.5mm to fit compact T-Box enclosures. It includes an 80±5 mm wire harness terminated with a 51021-4P connector for immediate PCB integration
| Parameter |
Specification |
| Model Number |
Ni-MH AAA550mAh 3.6V
|
| Nominal Voltage |
3.6V
|
| Rated Capacity |
550mAh
|
| Minimum Capacity |
≥ 520mAh
|
| Internal Impedance (Ri) |
< 210 mΩ (Pack)
|
| Standard Charge |
55mA (0.1C) for 16 hours
|
| Maximum Continuous Discharge |
550mA (1C)
|
| Discharge Cut-Off Voltage |
3.0V
|
| Operating Temperature (Charge) |
0°C to 60°C (Standard)
|
| Operating Temperature (Discharge) |
-20°C to 75°C
|
| Thermistor (NTC) |
10K±3% B=3435±1%
|
| Connector |
51021-4P (Reverse, UL1571 26# AWG)
|
| Wire Length |
80±5 mm
|
| Pack Dimensions (Max) |
46mm (H) x 32mm (W) x 11.5mm (T)
|
| Typical Weight |
Approx. 36g
|
Frequently Asked Questions
Q1: What is the nominal voltage and capacity of this 3.6V 550mAh (AAA) NiMH battery pack?
A: Nominal voltage 3.6V, rated capacity 550mAh (AAA), built with high-quality NiMH cells.
Q2: What applications is this 3.6V NiMH battery pack suitable for?
A: Ideal for cordless phones, small electronics, medical devices, backup power and OEM applications, and other devices requiring reliable rechargeable power.
Q3: How many charge-discharge cycles can this NiMH battery pack last?
A: Up to 500-1000 cycles under standard test conditions, offering long service life.
Q4: What certifications are available for this NiMH battery pack?
A: CE, RoHS, REACH compliant; MSDS and UN38.3 available for global shipping.
Q5: Can you customize the connector, wire, capacity and housing?
A: Yes, OEM/ODM customization supported including connector type, wire length, capacity, cell configuration and housing.
Q6: What is the minimum order quantity and lead time?
A: MOQ flexible for industrial packs; samples available, mass production typically around 15 days.
