Quick Quote
en_US English
en_US English ar العربية ja 日本語 ko_KR 한국어 vi Tiếng Việt th ไทย ms_MY Bahasa Melayu fa_IR فارسی id_ID Bahasa Indonesia my_MM ဗမာစာ zh_CN 简体中文 zh_HK 香港中文 zh_TW 繁體中文 ru_RU Русский de_DE Deutsch nl_NL Nederlands it_IT Italiano fr_FR Français es_ES Español pt_PT Português af Afrikaans az Azərbaycan dili bg_BG Български pa_IN ਪੰਜਾਬੀ hi_IN हिन्दी ur اردو bn_BD বাংলা hy Հայերեն is_IS Íslenska kk Қазақ тілі ne_NP नेपाली sr_RS Српски језик sw Kiswahili te తెలుగు jv_ID Basa Jawa ta_IN தமிழ் mr मराठी
⚡Off-Grid Energy Solutions

100% Energy Autonomy with

Heavy-Duty Off-Grid Systems.

Industrial-grade components designed for zero-grid areas. Reliable power 24/7/365 — from mountain lodges to remote islands.

Get a Free System Design
View Wholesale Catalog
0
yr
Cell Warranty
- 0
°C
Low Temp Operation
0
%
Depth of Discharge
0
kW
Max Peak Power
UL / CE / UN38.3
Full Certifications
15 Production Lines
In-Stock Ready
99.89%
On-Time Delivery
30+ Countries
Global Distribution
OEM / ODM
Custom Solutions
B2B Pain Point Solutions

We Solve Your Biggest Off-Grid Challenges

Real problems, real answers. Here’s how TURSAN eliminates the risks that keep distributors up at night.

Pain Point

“Too many service calls. Every trip to a remote site costs a fortune.”

Solution

Industrial-Grade BMS

10+ layers of protection — over-voltage, over-current, short-circuit, thermal, and more — to minimize unplanned site visits and extend service intervals.

Pain Point

“Installing in remote areas is a logistical nightmare. Labor costs spiral out of control.”

Solution

Plug-and-Play Integration

Pre-wired All-in-One systems reduce on-site labor by up to 60%. No specialist electrician required — deploy in minutes, not days.

Pain Point

“Systems fail in extreme cold winters or scorching desert heat. Warranty claims are killing margins.”

Solution

Ultra Wide Temp Range

Optional self-heating module for operation down to -20°C. Active cooling for ambient temps up to 50°C. Built for every climate on Earth.

Pain Point

“Our customers need more capacity over time but can’t shut down the system to upgrade.”

Solution

Hot-Swappable Modules

Modular stackable design — add capacity without powering down. Scale from 5 kWh to 25+ kWh on the same system architecture. Zero downtime expansion.

BMS Protection Layers
0 +
Labor Cost Reduction
0 %
Low Temp Operation
- 0 °C
High Temp Operation
0 °C
Off-Grid Core Selection

Choose Your Power Foundation

Three proven configurations for off-grid deployments — from standalone cabins to large-scale remote facilities.

24V300Ah Solar Battery
Entry-Level Off-Grid

12V204Ah LiFePO₄ Battery

Compact off-grid battery bank · 5.2 kWh usable

Voltage

24V

Capacity

204Ah

Energy

5.2 kWh

Cycles

6,000+

DoD

100%

Temp Range

-20~60°C

  • BYD / CATL Grade-A LiFePO4 cells
  • Smart BMS with 10-layer protection
  • Compatible with 99% of inverters
  • Bluetooth + RS485 monitoring
Request Wholesale Price
25kW Stackable Battery
Best Seller
High-Capacity Expansion

25kW Solar Stacked Battery

High-capacity rack battery · 25 kWh usable

Voltage

48V

Capacity

100Ah × 5

Energy

25 kWh

Cycles

6,000+

Max Parallel

5 Units

IP Rating

IP55

  • Modular design, flexible cost control
  • Active cell balancing for longevity
  • Hot-swap: expand without shutdown
  • RS485 / CAN / WiFi multi-protocol
Request Wholesale Price
5kW solar inverter with battery | All in one Home Battery Backup
All-In-One Off-Grid ESS

5kW All-in-One ESS

Inverter + battery integrated · 1-day deployment

Inverter Power

5 kW

Surge Power

10 kW (2×)

Battery

5 kWh

MPPT

2500-4000W

Switch Time

<10 ms

ATS

Built-in

  • Built-in MPPT solar charge controller
  • Generator auto-start (ATS) built-in
  • 4G / WiFi cloud monitoring ready
  • Wall / floor mount, IP55 enclosure
Request Wholesale Price
Technical Comparison

Off-Grid Performance Specs

What you need to consider are the key specifications—no flashy marketing gimmicks here, just factory data.

Feature

All-in-One Series (5kW)

Modular Stackable (48V Rack)

Standard 24V Module

Max Surge Power

2× Rated (10kW peak)

Motor-start capable

25kW

Single-stage 5 kW

Per inverter spec

Switching Time

< 10ms Seamless
< 10ms Seamless
Inverter dependent

Generator Support

Built-in Auto-start (ATS)

Built-in Auto-start (ATS)

External ATS required

Cloud Monitoring

4G / GPRS / WiFi

Remote audit & alerts

RS485 / CAN bus

Bluetooth / RS485

Low-Temp Operation

-20°C (self-heating opt.)

High-Temp Operation

60°C (active cooling)

60°C (passive + active opt.)

60°C standard

Depth of Discharge

100% DoD

Scalability

Up to 6 units parallel

Stacked design

Up to 6 units parallel

MPPT Solar Input

Built-in 4kW MPPT

Built-in 5.6kW MPPT

External MPPT required

IP / Ingress Rating

IP55

Certifications

CE / UL / UN38.3 / IEC / MSDS

Lead Time (MOQ)

15 days (5 units MOQ)

20 days (3 units MOQ)

10 days (10 units MOQ)

Scenario-Based Solutions

Every Off-Grid Environment, Covered

Off-grid isn’t one size fits all. TURSAN engineers solutions for the three most demanding deployment scenarios.

5kWh battery

Remote Residential

Long-duration backup power for homes in areas with unreliable or no grid access. Emphasis on multi-year endurance and minimal maintenance cycles.

6,000+ Cycles
10yr Cell Life
Auto Generator Start
Smart Load Management
Off-Grid Battery for Islands

Island / Coastal

Marine-grade construction for island and coastal deployments where salt air corrosion is a primary failure mode. Meets international C5 anti-corrosion standards.

C5 Anti-Corrosion
IP65 Enclosure
Salt Spray Tested
Marine-Grade Connectors
Home Battery Backup Grid-Tie Failure Scenarios and Mitigation Methods

Agricultural / Irrigation

Handles the punishing inrush current of pump motors and compressors at startup. 2× surge power capability ensures reliable operation of high-load agricultural equipment.

2×Surge Power
Motor-Start Ready
Dust-Proof IP65
Gen-Set Hybrid
Real-World Case Studies

Proven in Extreme Environments

Not lab conditions. Real deployments in the world’s harshest climates, documented and verified.

Energy Storage in Europe
Alps, Europe · Remote Lodge

Mountain Lodge — Continuous Power at -15°C

A remote mountain lodge in the Austrian Alps required 24/7 power through sub-zero winters with no grid access. TURSAN deployed a 48V rack system with optional self-heating modules, maintaining full capacity through temperatures as low as -15°C across three consecutive winter seasons without a single unplanned outage.

-15°C

Min Ambient

3 yrs

Zero Outages

25 kWh

Installed Capacity

Queensland, Australia · Off-Grid Farm

Off-Grid Farm — Heat Stability & Dust-Proof Performance

An agricultural operation in outback Queensland faced 45°C+ summer temperatures and extreme dust infiltration causing rapid degradation of conventional systems. TURSAN’s IP65 All-in-One ESS with active thermal management delivered full output through two scorching Australian summers, powering irrigation pumps with 2× surge power capability.

47°C

Peak Ambient

100%

Output Maintained

10 kW

Peak Pump Load

Pacific Islands · Telecom Tower

Island Telecom Tower — Salt-Air Corrosion Resistance

A telecommunications operator on a remote Pacific island required power infrastructure capable of surviving permanent salt-air exposure. TURSAN delivered C5-rated enclosures with marine-grade connectors and IP65 ingress protection. After 2 years of operation, zero corrosion-related failures have been recorded, and the system continues to operate at 98.7% efficiency.

C5

Anti-Corrosion

98.7%

Efficiency After 2yr

0

Corrosion Failures

Energy Storage for Remote Ranches
Patagonia, Argentina · Remote Ranch

Remote Ranch — Wind + Solar Hybrid Power

A cattle ranch 200km from the nearest grid connection in Patagonia needed reliable power for lighting, water pumping and refrigeration. A TURSAN 48V 560Ah rack system integrated with wind and solar provided uninterrupted power through extreme wind events and temperature swings from -10°C to 38°C across all four seasons.

48°C

Temp Swing

200km

From Grid

28.67kWh

Installed Capacity

R&D & Supply Chain

Built Different from the Inside Out

Our proprietary BMS algorithm is purpose-built for off-grid deep-cycling. Unlike standard BMS firmware, our logic actively optimizes for 100% Depth of Discharge (DoD) — extracting every usable watt while protecting cell longevity through intelligent charge/discharge curves.

 

We source only from Tier-1 cell manufacturers — CATL, EVE, and BYD. Every incoming cell batch undergoes capacity grading and internal resistance matching before assembly, ensuring cell-to-cell consistency below 2% variance across the entire pack.

Proprietary BMS Firmware
CATL / EVE / BYD Cells
<2% Cell Variance
100% DoD Optimized
ISO 9001 Certified
In-house Lab Testing
Automated Production Line for Solar Battery Pack
BMS 10-Layer Protection Stack

Over-Voltage Protection

Cell & Pack level

Under-Voltage Protection

Deep discharge guard

Over-Current Protection

Charge & discharge

Short-Circuit Protection

<1ms response

Thermal Management

Self-heat / cooling

Cell Balancing

Active <2mV variance

State-of-Charge Estimation

±1% accuracy
Tier-1 Cell Partners
CATL

World #1 · LiFePO4

BYD

Blade Cell Tech

Warranty

5 Years

Cycles

6,000+

OEM / ODM Customization

Tailored to Your Market

Every off-grid market is different. TURSAN offers full product customization so your brand stands out with specs that match your customers’ exact needs.

Capacity & Voltage

Custom Ah rating, voltage configuration (12V / 24V / 36V / 48V / 51.2V) to match any inverter or legacy system.

12V
24V
48V
Custom

Thermal Options

Add self-heating for polar climates or active cooling for desert deployments. Both available as factory-fitted options.

Self-Heat (-20°C)
Active Cool (50°C)

Communication Protocol

Factory-configured for your preferred inverter ecosystem. Support for all major protocols out of the box.

RS485
CAN Bus
WiFi
4G

Enclosure & IP Rating

From standard IP52 indoor to IP65 outdoor and C5 marine-grade corrosion protection for coastal and island deployments.

IP52
IP55
IP65
C5 Marine

Branding & OEM Label

Full white-label service. Custom color, logo, packaging, and user manuals in your brand identity.

Custom Logo
Color
Packaging

Certifications

We support your market entry with the certifications required by your region's regulations and grid standards.

UL
CE
IEC
AS/NZS

Connector & BMS Config

Custom connector type (Anderson, XT90, MC4, or proprietary), BMS communication parameters tuned to your inverter brand.

Anderson
XT90
MC4

Packaging & Logistics

Air-freight compliant, sea-freight palletized, or flat-pack kits for remote delivery. UN3480/UN3481 certified shipment.

Air Freight
Sea Freight
Flat-Pack
Quality Control

Tested for the World's Harshest Conditions

Off-grid systems can’t afford to fail. Our QC protocols go far beyond standard certification testing.

01

Capacity & Voltage

Simulates rough-road transportation across remote terrain. 3-axis vibration testing at 10–500Hz, 3G peak acceleration per IEC 60068-2-6 — ensuring structural integrity from factory to final destination.

IEC 60068-2-6
02

Thermal Shock Test

Extreme temperature cycling from -40°C to +70°C — 100 rapid-transition cycles — to verify all mechanical joints, enclosure seals, and cell chemistry remain intact under the most punishing temperature swings found in nature.

IEC 60068-2-14
03

Salt Spray Test

500-hour continuous 5% NaCl salt-spray exposure per ISO 9227. Mandatory for all island and coastal-rated enclosures. Zero corrosion penetration through C5-rated surface treatment and marine-grade gaskets.

ISO 9227 · C5
04

Cycle Life Test

100% DoD charge/discharge cycling accelerated aging test. All TURSAN cells achieve verified 6,000+ cycles at 25°C and 5,000+ cycles at 45°C, providing an independent performance baseline for distributors.

IEC 62619
05

Nail Penetration & Crush

Abuse testing including nail penetration (simulating internal short circuit) and mechanical crush. No fire, no explosion — verified by third-party labs per UN38.3 requirements.

UN38.3 · IEC 62133
06

IP Ingress Protection

All outdoor-rated units are individually tested for dust and water ingress — not just representative samples. IP65 units pass a 30-minute 12.5L/min water jet test before leaving the production line.

IEC 60529
FAQ

Questions Answered Before You Ask

Still have questions?

Our lead engineers respond to technical inquiries within 4 business hours. Get answers specific to your project.

Talk to an Engineer
Request Datasheet
Can these systems sync with diesel generators?

Yes. All TURSAN off-grid systems include generator compatibility as a core feature. The All-in-One series has a built-in ATS (Automatic Transfer Switch) that detects battery state-of-charge and automatically starts/stops a connected diesel generator. The modular rack series supports external ATS integration via dry-contact relay output. Generator charging current is adjustable (typically 20–80A) to prevent overloading aging gen-sets.

We hold full UN3480 (standalone lithium batteries) and UN3481 (batteries in equipment) certifications. For remote island shipping, we prepare: complete DGR documentation, MSDS/SDS sheets in the required language, and coordinate with IATA-certified freight forwarders experienced in Pacific and island routes. We can also supply batteries partially discharged (<30% SOC) to comply with IATA restrictions for air freight.

TURSAN designs for FRU-first maintenance. Every module is hot-swappable without system shutdown. Serviceable components include: individual battery modules (tool-free rail removal), BMS boards (plug-in replacement), fuse assemblies, and communication harnesses. We provide a field service kit and a step-by-step troubleshooting guide.

The general rule: calculate your daily load (kWh) × autonomy days ÷ DoD. For example, a cabin consuming 5 kWh/day with 2 days of autonomy and 100% DoD requires 10 kWh minimum. For B2B deployments, TURSAN offers free SLD design — submit your load profile and we’ll size the system precisely, accounting for seasonal solar variation and generator backup strategy.

LiFePO4 (Lithium Iron Phosphate) is the unambiguous choice for off-grid living in 2025. Compared to lead-acid: 4–6× longer cycle life, 50% of the weight, 100% usable DoD (vs 50% for lead-acid), zero maintenance, and no hydrogen outgassing (safe for enclosed spaces). Compared to NMC lithium: superior thermal stability, wider temperature range, and ~20% longer calendar life. All TURSAN off-grid products use LiFePO4 exclusively.

TURSAN LiFePO4 batteries are rated for 4,000–6,000 charge cycles at 100% DoD. Assuming one full cycle per day, that’s 11–16 years of daily use. In practice, off-grid systems rarely complete a full daily cycle, extending real-world lifespan significantly. Calendar life is approximately 15–20 years at standard storage conditions.

Industry rule of thumb: daily consumption (kWh) × 1.5–2.5 (autonomy factor). A typical off-grid home using 10 kWh/day needs a 15–25 kWh battery bank. TURSAN’s engineering team provides free custom battery bank sizing calculations — submit your load schedule via the form below and receive a detailed SLD within 24 hours.

Talk to Our Lead Engineers

Get Your Custom SLD in 24 Hours

Discuss your off-grid project with TURSAN’s application engineers. Receive a custom Single Line Diagram (SLD) and system BOM tailored to your site’s load profile, climate, and budget.

Your information is secure. We respond within 24 hours. No spam, ever.

Make Contact Now

Speak to Our Experts in 1 min
Got a Question? Contact me directly and l will help you quickly and directly.
Speak to Our Experts in 1 min
Got a Question? Contact me directly and l will help you quickly and directly.
WeChat Video
Use WeChat to Swipe and Watch our Videos!

Make Contact Now

Speak Directly with Our Boss!
Got a Question? Contact me directly and l will help you quickly and directly.
Speak Directly with Our Boss!
Got a Question? Contact me directly and l will help you quickly and directly.

Make Contact Now

Speak to Our Experts in 1 min
Got a Question? Contact me directly and l will help you quickly and directly.
TURSAN Smart Manufacturing
Witness how our batteries are made — from cells to finished packs — with complete quality control and rigorous testing. Submit your request and our tour coordinator will reach out.