Select products now available online for purchase  

  • Select products now available online for purchase

  • Over 1 Million
    Built in the USA

    We build mission critical solutions right here in the USA, engineered to your specifications and tested to exacting military standards.

  • military to the core

    40 years as a preferred supplier

    We know what it takes to keep your equipment powered up under almost any conditions.

  • upgrade your
    charger software
    to the latest version here 




  • one-stop shopping

    custom solutions

    With design, prototyping, testing, and manufacturing all under one roof, we’re your partner through every stage of the development cycle.

  • battle tested
    proven designs, ready for integration

    Chances are there’s a solution among our more than 80 products good to go for your application.



State of the art rechargeable and primary batteries keep you powered up in the most extreme conditions.


Smart chargers tune their outputs to the batteries they charge, automatically.


Complete battery/charger systems, diesel generator replacements, and more.

Bren-Tronics In Action

    • BT Number
    • Military Number
    • Chemistry
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  • FLEX Charger® Kit Series

    FLEX Charger® Kit Series

    A simple solution for your fron-line charging needs. Designed to charging a variety of standard military batteries. The FLEX Charger® comes in many variants depending on your mussion needs and has two size: two (2) panel version holds up to four (4) batteries and the four (4) panel version holds up to eight (8) batteries.

    • BT Number
  • 1
  • BB-2590/U 7.5 Ah Rechargeable Lithium-Ion Battery

    Rechargeable Lithium-Ion battery

    When the best robots in the world need power, they look to the best batteries …the Bren-Tronics, Inc. BB-2590/U battery. Providing power for all the extreme needs seen by warfighters and first responders the world over.

    • BT Number
    • Military Number
    • Chemistry
    • NSN
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  • Rechargeable Lithium-Ion battery

    Powering one of the world’s most widely used Handheld Thermal Imagers, the BT-70492BK battery provides cutting edge technology in a precise package.

    • BT Number
    • Chemistry

Bt-Direct (USA Sales Only)

Shop Bren-Tronics Online

"Buy American" Directly from Bren-Tronic's factory in Commack, NY.

Resources + Support


Our rapid prototyping capabilities help you quickly engineer the right solution for your power needs.

Research + Development

From initial design through prototyping, testing, evaluation, and manufacturing, our systems are designed, tested and built for mission critical applications, where failure is not an option.

Custom Solutions

We have designed and manufactured custom products for military, major Original Equipment Manufacturers (OEM’s), and small businesses worldwide. Contact us to get started on your custom solution today.