Ultralife Batteries

Ultralife is a global leader in lithium battery technology, best known for creating the world’s longest-lasting 9V battery. These high-performance cells are designed for devices where long-term reliability is the top priority. From keeping your home safe with decade-long smoke alarm power to providing steady energy for critical medical equipment, Ultralife batteries offer a significant performance boost over standard brands.

Ultralife is a global leader in lithium battery technology, best known for creating the world’s longest-lasting 9V battery. These high-performance cells are designed for devices where long-term reliability is the top priority. From keeping your home safe with decade-long smoke alarm power to providing steady energy for critical medical equipment, Ultralife batteries offer a significant performance boost over standard brands.

Ultralife 9-Volt Lithium Battery with Foil Pack

Item #: BAT-U9VL-FP
 
Voltage: 9 Volt / 1200 mAh
• Lithium
• Dimensions: 48.8 mm (1.92") / 16.9 mm (0.67") / 26 mm (1.02")
• Weight: 0.20 lbs
• Warranty: 1 Year (Directly Through UltraLife)
Reg. Price: $14.95
Volume Price: $12.71 See Volume Price Details
QTY:

Ultralife BA-5347/U Military Battery | 6V Lithium, NSN 6135-01-455-7946

Item #: BA5347/U
 
Voltage: 6 Volt / 11100 mAh
• Li-MNO2
• Dimensions: 3.75" / 2.55" / 1.50"
• Weight: 1.00 lbs
• Warranty: DOA
Price:
$94.95
Price: $94.95
QTY:

Ultralife BA-5390A/U Military Battery | 15V/30V Lithium, NSN 6135-01-501-0833 [16pc MOQ]

Item #: BA5390/U
 
Voltage: 15 Volt or 30 Volt / 11100 mAh
• Li-MNO2
• Dimensions: 4.97" / 4.37" / 2.43"
• Weight: 1.00 lbs
• 60 Day Return
• See All Compatible Models
Price:
$328.95
Price: $328.95
QTY:

Ultralife UBP002 Battery

Item #: LITH-UBP002   |  Temporarily Unavailable
 
Voltage: 3.7 Volt / 900 mAh
• Li-Ion
• Dimensions: 54 mm / 36 mm / 6.2 mm
• Weight: 0.20 lbs
• Warranty: 1 Year
• See All Compatible Models
Price:
$16.95
Price: $16.95
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The Ultralife Advantage: Power That Lasts a Decade

When it comes to specialized lithium power, Ultralife is in a class of its own. While standard batteries often need to be replaced every year, Ultralife’s flagship lithium products are engineered to provide consistent power for up to 10 years in many applications. This "set it and forget it" reliability makes them the preferred choice for homeowners, medical professionals, and industrial engineers alike.

Why Choose Ultralife Lithium?

  • Unrivaled Longevity: Lasts up to five times longer than traditional alkaline in smoke detectors.
  • Reliable in Any Climate: Works in freezing cold or high heat.
  • Lightweight Power: Significantly lighter than alkaline, perfect for portable electronics.
  • Safety First: Advanced safety features prevent leakage risks.

Trusted for Home Safety and Medical Gear

Reliability isn't just a convenience—sometimes it's a necessity. Ultralife batteries are the top choice for smoke alarm manufacturers because they eliminate the "low battery chirp" for years at a time. Beyond home safety, these batteries are widely used in the medical field for infusion pumps and monitors.