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Description

Saft BA5800A/U 6V Lithium SO₂ Battery | Military Grade Power

Name: Saft BA5800A/U 6 Volt, 7.5 Ah, Lithium Sulfur Dioxide Battery, NSN 6135-99-798-9851
Brand: Saft Military
SKU: BA5800A/U
Price: 56.66 USD
Availability: InStock

The Saft BA5800A/U Lithium Sulfur Dioxide (Li-SO₂) Battery is a high-performance 6V primary power source engineered for mission-critical military electronics and rugged field equipment.
Built from two LO26SX cells in series and designed under MIL-PRF-49471B standards, the BA5800A/U delivers reliable power, exceptional temperature tolerance, and long-term storage stability.
Featuring a built-in protection devices—including a diode for charge prevention, a non-replaceable fuse, thermal cutoff (TCO), and a manual discharge device—ensuring maximum safety in demanding deployment environments.
Ideal for GPS systems, chemical agent monitors, and other tactical devices requiring dependable long-life primary power.

Specifications

Saft BA5800A/U Specifications

Chemistry	Lithium Sulfur Dioxide (Li-SO₂)
Cell Construction	Assembled from 2 × LO26SX cells in series
Typical OCV	6.0V
Nominal Voltage (500 mA)	5.3V
Cut-Off Voltage	4.0V
Typical Capacity (21°C / 70°F at 250 mA)	7.5Ah
Operating Temperature	–40°C to +71°C (–40°F to +160°F)
Storage Temperature	Recommended ≤ +35°C (95°F); Possible –40°C to +71°C
Typical Weight	220 g (7.76 oz)
Lithium Content	4.8 g (0.17 oz)
Max Diameter	35.51 mm (1.398 in)
Max Height	128.5 mm (5.059 in)
Case Material	Plastic
Reference Specification	MIL-PRF-49471B (CR)
NSN	6135-01-440-7774
	6135-99-798-9851
	6135-99-798-9851
	6665-99-760-9742

About the BA5800A/U

The Saft BA5800A/U is a rugged, high-reliability 6V Lithium Sulfur Dioxide (Li-SO₂) primary battery engineered for defense, field instrumentation, and demanding industrial applications. Constructed from two LO26SX cells connected in series, this battery delivers consistent performance under extreme conditions, making it one of the most trusted power sources for U.S. military and government equipment.

Designed to support mission-critical operations, the BA5800A/U incorporates multiple built-in safety mechanisms including a non-replaceable fuse, a normally-closed thermal cutoff (TCO), a blocking diode for charge prevention, and a manual discharge switch with resistor for safe end-of-life handling. This robust design ensures stable performance and protection against misuse, charging attempts, or abnormal temperature exposure.

With a typical capacity of 7.5Ah, dependable energy delivery at up to +71°C (160°F), and long-term storage capability, the BA5800A/U remains a top choice for tactical GPS units, chemical agent monitoring systems, and field-deployed electronic devices.

Features and Benefits

- Constructed from two high-reliability LO26SX cells for stable performance
- Integrated non-replaceable fuse for added safety
- Built-in thermal cutoff (TCO) for over-temperature protection
- Internal diode prevents accidental charging or reverse current
- Manual discharge switch/resistor ensures safe deactivation at end of service life
- Wide operating temperature range suitable for extreme environments
- Long shelf life and excellent performance stability
- Proudly made in the USA

Applications

Typical Equipment Applications: