Portable Off-Grid Power Storage Battery

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Portable Off-Grid Power Storage Battery
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The internal multi-layer BMS utilizes an industrial-grade microcontroller to monitor individual cell voltages, pack temperatures, and current throughput in real-time.
Category
Off-Grid Energy Storage Battery
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Description
 

Portable Off-Grid Power Storage Battery: OEM & ODM Technical Specifications & Manufacturing Guide

 

Cell Chemistry

LiFePO4 (Lithium Iron Phosphate) prism cells, selected for exceptional thermal runaway resistance and high structural stability.

Capacity Range

Customizable modular blocks ranging from 500Wh to 5,000Wh base units.

Nominal Voltage

12.8V, 25.6V, or custom architectural voltages up to 51.2V configuration.

Cycle Life

>= 4,000 cycles at 80% Depth of Discharge (DoD) under a standard 0.5C charge/discharge rate at 25C.

Inverter Output

Pure Sine Wave output; continuous power ratings from 500W to 3,000W (surge capacity up to double continuous rating for 50ms).

Operating Temperature Range

Discharging

-20C to 60C

Charging

0C to 45C (with integrated low-temperature cutoff protection)

 

 

Integrated Battery Management System (BMS) Parameters


The internal multi-layer BMS utilizes an industrial-grade microcontroller to monitor individual cell voltages, pack temperatures, and current throughput in real-time.


Active/Passive Cell Balancing: Ensures voltage delta across series-connected cells remains below 30mV during the terminal charging phase.


Hardware & Software Protection Thresholds:
Overcharge Protection: Triggers circuit cutoff at >= 3.65V per cell.


Over-Discharge Protection: Triggers cutoff at <= 2.50V per cell.


Short-Circuit Protection: Response time under 200us with automatic recovery lock.


Thermal Monitoring: Dual NTC thermistors track MOSFET and cell temperatures, halting operation if internal temps exceed 65C during discharge or 55C during charge.


Communication Protocols: Standard RS485 and CAN 2.0 interface support for external data logging, parallel unit linking, and inverter synchronization. Optional Bluetooth module for local telemetry tracking via mobile application.

 

 

Input & Output Interface Matrix


Configurable panel layouts to match specific regional electrical standards and application profiles:


AC Outputs: 2 to 4 universal or region-specific sockets (e.g., US NEMA 5-15, EU Schuko, UK BS 1363) delivering stable 110V or 230V at 50Hz/60Hz.


DC & USB Ports:
USB-A: QC3.0 fast charging ports (18W max per port).


USB-C: Power Delivery (PD) supporting up to 100W bidirectional input/output.


DC5521 / Cigarette Lighter Port: 12V/10A regulated output for mobile refrigeration and field electronics.


Charging Interfaces:
AC Grid Input: Built-in bidirectional high-efficiency inverter module supporting direct wall charging (0 to 100% charge in 1.5 to 3 hours depending on model wattage).


Solar MPPT Input: Integrated Maximum Power Point Tracking (MPPT) charge controller supporting Voc ranges from 12V to 60V with an input current limit up to 20A.

 

 

Thermal & Enclosure Engineering


Housing Material: Flame-retardant ABS+PC engineering plastic composite combined with an internal extruded aluminum structural frame for impact mitigation and structural rigidity.


Cooling Mechanism: Variable-speed, low-noise brushless DC cooling fans activated automatically when internal thermal loads exceed 45C or during high-wattage AC inverter deployment.


Ingress Protection (IP): Standard configuration rated at IP21; customizable gasket seals available up to IP54 for harsh field and construction site deployments.

 

 

Target Application Scenarios & Use Cases


To visualize how these systems perform in the field, our power stations are engineered for diverse commercial and consumer deployments:


Recreational Vehicles (RV) & Marine: Seamless integration with onboard 12V/24V electrical systems and solar arrays for off-grid living.


Emergency Home Backup (UPS): Reliable, silent backup for critical home appliances, medical devices, and communication routers during grid failures.


Professional Fieldwork & Construction: Ruggedized power delivery for power tools, surveying equipment, and mobile workstations in remote or infrastructure-free locations.

 

 

OEM & ODM Customization Services & Commercial Terms


As the direct manufacturing source, we provide complete engineering modifications tailored to brand requirements:


Electrical Modifications: Custom inverter wattages, frequency adjustments, specific AC/DC socket layouts, and parallel expansion port integration.


Structural & Aesthetic Design: Mold modifications for proprietary enclosure geometry, custom housing color injection (Pantone matched), laser-engraved or silk-screened brand logos, and reinforced corner buffers.


Packaging & Documentation: Custom multi-layer corrugated retail packaging, multilingual user manuals, spec sheets, and customized firmware boot logos.


Regulatory Testing Support: Comprehensive compliance documentation provided for regional shipping and retail entry, including UN38.3 (transportation safety), MSDS, CE, RoHS, and FCC test reports.


Commercial Parameters:
Minimum Order Quantity (MOQ): Flexible tiers starting at 100 units for standard housing customization; negotiable for full-mold ODM projects.


Lead Time: 30 to 45 days for initial OEM prototype sign-off and mass production rollout.

 

 

FAQ

 

Q: What is a Portable Off-Grid Power Storage Battery?

A: A Portable Off-Grid Power Storage Battery is a rechargeable energy storage device that stores electricity and provides power without relying on the electrical grid. It is commonly used for outdoor activities, emergency backup, and remote power applications.

Q: What battery chemistry do you use?

A: We mainly provide lithium battery solutions, including LiFePO4 battery technology. LiFePO4 is widely used in energy storage applications because of its excellent safety performance, long cycle life, and stable chemical structure.

Q: How long can the battery provide power?

A: The operating time depends on battery capacity and connected load.
Calculation Formula:
Battery Capacity (Wh) ÷ Device Power Consumption (W) = Approximate Working Time
(Higher-capacity units support larger devices or extended operating windows.)

Q: Can the battery be charged by solar panels?

A: Yes. Portable off-grid batteries can be configured with solar charging input, allowing users to build independent solar power systems for outdoor and remote applications.

Q: Can you customize battery capacity and design?

A: Yes. We support full OEM and ODM customization across:

  • Capacity & Voltage architecture
  • Output port configurations
  • Housing design & Pantone color matching
  • Brand logo branding
  • Packaging design

Q: What safety protections are included?

A: The integrated multi-layer BMS provides comprehensive hardware and software protection against:

  • Overcharging and over-discharging
  • Excessive current surges
  • Short circuits (<= 200us response)
  • Abnormal temperature conditions

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