- N-Series
- Battery pack
NB4037HD50
7.2 V smart lithium-ion battery
Specifications (nominal & typical)
Source: datasheet Rev 1.1
Electrical
| Voltage | 7.2 V |
|---|---|
| Capacity | 5 Ah |
| Energy | 36 Wh |
| Volumetric energy density | 262 Wh per litre |
| Gravimetric energy density | 185 Wh per kg |
| Maximum discharge current | 8 A |
| Power | 40 W |
| Chemistry | Lithium-ion |
| Cells | 2 × 21700 |
| Configuration | 2S1P |
Mechanical
| Dimensions (L × W × H) | 94.89 × 53.17 × 27.26 mm (3.74 × 2.1 × 1.08 in) |
|---|---|
| Weight | 195 g (0.43 lb) |
| Form factor | Rectangular |
| Device cavity | 27.8mm x 54.7mm cross section |
| Ingress protection | IP65 |
Temperature limits
| Discharge (operating) | −20 °C to +55 °C |
|---|---|
| Charge | 0 °C to +45 °C |
| Storage | −20 °C to +60 °C |
Interface
| Mating connector | AMP P/N 5787422-1 or 5787446-1 |
|---|---|
| State-of-charge display | Always on 5-Bar LCD |
Compliance and shipping
| Certifications | EMC Directive, UKCA, Battery Directive, RoHS2, REACH, WEEE, UN 38.3, CE, FCC Part 15 Class B |
|---|---|
| Equivalent lithium content | 2 g |
Confirm every value against the datasheet before you commit a design. Weight and temperature limits are read from the datasheet; energy densities are calculated from it. Charge parameters and the pinout are on the datasheet.
Compatibility
Chargers
| Charger | Bays | Charge | Calibrate | Set SoC 25% | Status |
|---|---|---|---|---|---|
| CH1000 | 1 | Yes | Yes | No | Active |
| CH1000CAL | 1 | Yes | Yes | No | Active |
| CH1010 | 2 | Yes | Yes | No | Active |
| CH1111 | 4 | Yes | Yes | No | Active |
| CH7171 | 2 | Yes | No | No | Active |
| CH1111CAL | 4 | Yes | Yes | No | Active |
Calibrate runs a full cycle so the fuel gauge reports true capacity. Set SoC 25% parks packs at storage charge for shipping.
Connectors
| Part | What it is |
|---|---|
| 610005 | Straight Connector - TE Part Number: 5787446-1 |
| 610007 | 90° Connector with Right-Hand Key - TE Part Number: 5787422-1 |
| 610018 | 90° Connector with Left-Hand Key - TE Part Number 5787428-1 |
| BL237A | Connector Mounting Circuit Board |
| EB397A | Connector Board with Ideal Diode Circuit. |
Cables
| Part | What it is |
|---|---|
| 629102A1 | 3FT, 5-conductor straight cable for NB403x li-ion smart battery packs. |
Accessories
Compare with its family
Volume pricing available on every part.
 NB4037HD50 This part |  NB2037HD34 Same family |  NB2037QE34 Same family |  NB3037HD29 Same family |  ND4057HD50 Same family | |
|---|---|---|---|---|---|
| Voltage | 7.2 V | 7.2 V | 7.2 V | 7.2 V | 7.2 V |
| Capacity | 5 Ah | 3.4 Ah (differs) | 3.4 Ah (differs) | 2.8 Ah (differs) | 10 Ah (differs) |
| Energy | 36 Wh | 24 Wh (differs) | 24 Wh (differs) | 20 Wh (differs) | 72 Wh (differs) |
| Max discharge | 8 A | 4 A (differs) | 4 A (differs) | 8 A | 10 A (differs) |
| Power | 40 W | 20 W (differs) | 20 W (differs) | 40 W | 50 W (differs) |
| Cells | 2 × 21700 | 2 × 18650 (differs) | 2 × 18650 (differs) | 2 × 18650 (differs) | 4 × 21700 (differs) |
| Configuration | 2S1P | 2S1P | 2S1P | 2S1P | 2S2P (differs) |
| Dimensions (mm) | 94.89 × 53.17 × 27.26 | 85 × 42 × 23 (differs) | 85 × 42 × 23 (differs) | 85 × 42 × 23 (differs) | 94 × 96 × 27 (differs) |
| Volume (mm³) | 137,535 | 82,110 (differs) | 82,110 (differs) | 82,110 (differs) | 243,648 (differs) |
| Weight | 195 g | 122 g (differs) | 122 g (differs) | 122 g (differs) | 372 g (differs) |
| Gravimetric density | 185 Wh per kg | 197 Wh per kg (differs) | 197 Wh per kg (differs) | 164 Wh per kg (differs) | 194 Wh per kg (differs) |
| Discharge temperature | −20 °C to +55 °C | −20 °C to +60 °C (differs) | −20 °C to +60 °C (differs) | −30 °C to +60 °C (differs) | −20 °C to +55 °C |
| SoC display | Always on 5-Bar LCD | Always on 5-Bar LCD | Always on 5-Bar LCD | Always on 5-Bar LCD | Push button 4-bar LED (differs) |
| Mating connector | AMP P/N 5787422-1 or 5787446-1 | AMP P/N 5787422-1 or 5787446-1 | AMP P/N 5787422-1 or 5787446-1 | AMP P/N 5787422-1 or 5787446-1 | 5-Pin Standard Connector (differs) |
| Price, qty 1-11 | $130.51 | $103.86 | $106.52 | $111.57 | $167.22 |
This part, NB4037HD50Differs from the NB4037HD50
Documents
Need a STEP model, drawing or test data that is not listed? Contact us.
Application notes
From the current catalog
NB4037HD50 Smart Lithium-Ion Battery: The Inspired Energy 40xx range of rechargeable smart Li-Ion battery packs utilize 21700 cells and are designed for applications where size and runtime may be a consideration.
The NB4037HD50 ( 2S1P ) 7.2V smart lithium ion battery incorporates the standard features that designers and engineers have come to rely on for safety and function, such as SMbus, a pull tab for easy removal and on-pack LED display for relative SOC indication.
The NB4037 battery pack can perform at -20°C for low temperature applications, as the low internal impedance enable the cells to deliver good capacity and discharge current. (Note, in low temperature applications, we recommend testing the device at temperature to validate performance).
The compact design makes it ideal for use in compact and handheld devices.
Features:
- SMbus
- Pull tab for easy removal
- On-pack LCD Display for Relative SOC Indication Our expertise lies in creating customized battery hybrids that seamlessly integrate standard components to deliver optimal performance.
NB4037HD50 Smart Li-ion battery customization options:
- Custom label
- Custom Firmware
- Additional performance options for OEM applications Need additional capacity?
Check out our ND4057HD50 battery Need a a smaller pack?
Consider evaluation of the NB3037HD29
Custom options
Make it yours.
The NB4037HD50 is a strong starting point. Inspired Energy's real advantage is what we can build from it: custom configurations made in Newberry, Florida, with no third-party manufacturer involved.
Explore custom optionsCustom label
Your brand or OEM labeling, printed in-house on our label line.
Custom firmware
Battery-management parameters tuned to your device's performance requirements.
Custom connector
Proprietary or standard connector options to match your device's interface.
Custom cell configuration
A different cell count, array or chemistry to hit your voltage and runtime targets.
Custom enclosure
New tooling and injection molding for a form factor built around your device.