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Believe It Flex Fx0321-1 3.5ah Stacked-lithium Battery Gadget [gT5qIJ6Q]

$29.99 $95.99 -69%

Believe It Flex Fx0321-1 3.5ah Stacked-lithium Battery Gadget [gT5qIJ6Q]The FLEX 24V Stacked Lithium Battery Platform offers industry-dominating power and performance. Its intelligent power management enables higher discharging, and it combines THERMA-TECH™+ cooling technology w

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Believe It Flex Fx0321-1 3.5ah Stacked-lithium Battery Gadget [gT5qIJ6Q]

The FLEX 24V Stacked Lithium Battery Platform offers industry-dominating power and performance. Its intelligent power management enables higher discharging, and it combines THERMA-TECH™+ cooling technology with high-performance heat management protection to offer faster charging and a longer battery life to power through the workday. Protected by the FLEX Limited Lifetime Warranty when registered within 30 days of purchase at registermyFLEX.com through December 31, 2024.

Includes: 

(1) 24V 3.5Ah Stacked-Lithium Battery

Features

THE FLEX STACKED LITHIUM ADVANTAGE
200% more power with 24V lithium, 300% longer battery life with THERMA-TECH™+ heat management, 100% faster charging; 100% cross-compatible with all FLEX 24V tools and chargers

THERMA-TECH™+ HEAT MANAGEMENT
Minimizes heat for maximum runtime

POWER IQ
Intelligent power management monitors and optimizes the cells for overload protection and higher power

SHOCK, DROP, AND ELEMENT RESISTANT
Shock-resistant design and epoxy-sealed electronics

PATENTED DUAL-SIDED FUEL GAUGE
Quickly view battery charge from multiple angles

FAST CHARGING
Fully Charges in little as 15 minutes

FLEX 24V CROSS-COMPATIBILITY
Compatible with all FLEX 24V chargers and tools

BATTERY LOCK SYSTEM
Durable design prevents accidental disconnection during recharging

Specs

  • Voltage: 24V
  • Battery Power Type: Stacked Lithium
  • Battery Capacity: 3.5 Ah
  • Battery Energy: 84Wh
  • Battery Weight: 1.5 lbs • 0.7 kg

What Our Customers Say

December 29, 2025

Absolutely no complaints!

This is a great buy. I really, really, really love it.

- Arwel U..

December 29, 2025

Absolutely no complaints!

It’s a very fine and an exceptionally great-built tool.

- Mabyn V..

December 29, 2025

Absolutely no complaints!

A great product. And I really, really, really, really do love it.

- Siwan S..

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