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Tianjin Estel Electronic Science and Technology Co.,Ltd

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City:shenzhen

Province/State:guangdong

Country/Region:china

Contact Person:MsFiona Liang

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China ESTEL DJM1240 12V 40Ah Compact Lead Acid Battery Reliable Power Solution for Telecom and Backup Systems wholesale

ESTEL DJM1240 12V 40Ah Compact Lead Acid Battery Reliable Power Solution for Telecom and Backup Systems

Name: ESTEL DJM1240 12V 40Ah Compact Lead Acid Battery Reliable Power Solution for Telecom and Backup Systems
Brand: ESTEL
Price: 715 USD

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Brand Name :ESTEL

Model Number :DJM1240

Certification :ISO9001, CE, 3C, FCC, TLC

Place of Origin :China

MOQ :100000

Price :715-4286 usd

Payment Terms :T/T

Supply Ability :100000

Packaging Details :carton packing

Model :JM1240

Nominal Voltage :12V

Rated Capacity (C10) :40Ah @1.80V/cell

imensions (L×W×H) :197×165×170mm (7.75×6.50×6.69in)

Weight :14.5kg (32.0 lbs)

Terminal Type :M6

Case Material :ABS

Service Life :12-year design float life at optimal conditions

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ESTEL DJM1240 12V 40Ah Compact Lead Acid Battery Reliable Power Solution for Telecom and Backup Systems

Overview

The ESTEL DJM1240 is a versatile 12V 40Ah lead-acid battery designed for space-constrained applications requiring dependable power. With its compact ABS enclosure and maintenance-free design, this battery delivers stable performance across a wide temperature range while offering up to 12 years of float service life at 25°C. Ideal for telecom equipment, small-scale UPS systems, and emergency lighting, the DJM1240 combines robust 400A surge capacity with certified safety features including UL and CE compliance.

Key Features

Compact Design: Space-saving 197×165×170mm (7.75×6.50×6.69in) footprint
Maintenance-Free: Sealed construction prevents acid leakage
High Surge Current: 400A peak discharge (5-second duration)
Temperature Resilient: Operates from -20°C to 55°C (-4°F to 131°F)
Long Service Life: 12-year design float life at optimal conditions

Technical Specifications

Core Parameters

Specification	Value
Model	DJM1240
Nominal Voltage	12V
Rated Capacity (C10)	40Ah @1.80V/cell
Dimensions (LxWxH)	197x165x170mm(7.75x6.50x6.69in)
Weight	14.5kg (32.0 lbs)
Terminal Type	M6
Case Material	ABS
Specification	Value

Capacity Performance (25°C)

Discharge Rate	Capacity	Current
C20	42Ah	2.10A
C10	40Ah	4.00A
C5	36.4Ah	7.28A
C1	25.5Ah	25.5A

Electrical Characteristics

Max Discharge Current: 400A (5s pulse)
Internal Resistance: 9.0mΩ @25°C
Self Discharge: ≤3% per month @25°C

Charging Parameters

Max Charge Current: 12.0A @25°C
Float Voltage: 2.25-2.30V/cell
Equalization Voltage: 2.35-2.40V/cell

Performance Data (25°C)

Constant Current Discharge (Amperes)

Voltage	10min	30min	1h	3h	5h	10h	20h
1.85V/cell	83.2	36.1	22.3	9.99	6.90	3.82	2.03
1.80V/cell	94.6	39.3	23.1	10.8	7.15	4.00	2.10
1.60V/cell	117.8	42.1	25.5	11.5	7.66	4.18	2.19

Constant Power Discharge (Watts)

Voltage	10min	30min	1h	3h	5h	10h	20h
1.85V/cell	155.4	70.3	44.1	19.9	13.7	7.75	4.12
1.80V/cell	173.9	75.9	45.4	21.5	14.3	8.10	4.26

Applications

Telecommunications: Network equipment, base stations
Backup Power: Small UPS systems, data racks
Emergency Systems: Exit lighting, security devices
Medical Equipment: Portable devices, monitors
Renewable Energy: Small solar storage systems

Certifications & Standards

Safety Certifications: UL, TLC, CE
Performance Standards: IEC 60896, GB/T19638, YD/T 799, DL/T 637
Manufacturing Certifications: IATF 16949, ISO 9001, ISO 14001, ISO 45001

Why Choose ESTEL DJM1240?

Space-Efficient: Compact size fits tight installations
Reliable Performance: Stable output across temperature extremes
Easy Installation: Standard M6 terminals for quick setup
Low Maintenance: Sealed design eliminates watering needs
Proven Safety: Meets international safety standards

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