ULS FlexiBlock Series

TWS FlexiBlock LiFePO4 Battery Systems

Choose the Right 12V or 24V Battery for Your Equipment

Four rugged 1.28 kWh battery models with intelligent BMS protection, IP67 sealing, self-heating configurations, app connectivity, and U.S.-based selection support.

LiFePO4 IP67 Self-Heating Intelligent BMS MyTWS App

Compare All Four Models Check My Equipment

U.S. Inventory
Stocked and supported in Las Vegas

Technical Selection Help
Voltage and application review

Rugged Construction
IP67 sealed battery platform

Expandable Systems
Approved series and parallel options

Four-Model Selection Guide

Find the FlexiBlock That Matches Your System

Choose 12.8V or 25.6V based on the equipment platform. Choose Lite for an LED status interface or Pro for an integrated LCD display.

12V Lite

FlexiBlock Lite 12V 100Ah

12.8V • 100Ah • 1.28 kWh

LED status indicator
100A continuous discharge
250A peak for less than 10 seconds
IP67 and self-heating configuration
CAN, CANOpen, and BLE

View 12V 100Ah Lite

12V Pro

FlexiBlock Pro 12V 100Ah

12.8V • 100Ah • 1.28 kWh

Integrated LCD status display
100A continuous discharge
250A peak for less than 10 seconds
IP67 and self-heating configuration
CAN, CANOpen, and BLE

View 12V 100Ah Pro

24V Lite

FlexiBlock Lite 24V 50Ah

25.6V • 50Ah • 1.28 kWh

LED status indicator
50A continuous discharge
125A peak for less than 10 seconds
IP67 and self-heating configuration
CAN, CANOpen, and BLE

View 24V 50Ah Lite

24V Pro

FlexiBlock Pro 24V 50Ah

25.6V • 50Ah • 1.28 kWh

Integrated LCD status display
50A continuous discharge
125A peak for less than 10 seconds
IP67 and self-heating configuration
CAN, CANOpen, and BLE

View 24V 50Ah Pro

Need a 12V Platform?

Compare the Lite and Pro 12.8V 100Ah models.

Shop 12V Models

Need a 24V Platform?

Compare the Lite and Pro 25.6V 50Ah models.

Shop 24V Models

TWS FlexiBlock battery system for mobile power applications

FlexiBlock Core Technology

Built for Protection, Temperature and Flexible Installation

TWS UltraSafety intelligent battery management system

TWS UltraTemp battery performance across temperature conditions

TWS FlexiBlock series and parallel battery configurations

TWS FlexiBlock internal construction and safety features

Monitor, Protect and Operate with Confidence

Pro LCD Display

Pro models provide an integrated display for quick battery-status checks.

TWS FlexiBlock shock absorption and vibration protection

Rugged Mechanical Design

Internal support structures help secure the cells and battery-management components.

Self-Heating Support

The stocked configuration is identified as self-heating for supported low-temperature charging conditions.

MyTWS Bluetooth battery monitoring application

MyTWS App Monitoring

Use supported app functions to review battery information and diagnostics.

Check Compatibility Before Ordering

FlexiBlock batteries are not presented as universal drop-in replacements. Confirm voltage, continuous and peak current, charger profile, communications, physical dimensions, terminal layout, mounting, cable sizing, over-current protection, and series/parallel requirements.

For the fastest review, send: equipment make/model, current battery label, charger label, required voltage, motor or inverter rating, available dimensions, and desired runtime.

Email a Battery Specialist Call 877-742-8136

Before You Choose a Battery

What is the difference between Lite and Pro?

Lite models use an LED status indicator. Pro models add an integrated LCD display. Review each product page for the exact controls, communication, and included accessories.

Can FlexiBlock batteries be connected together?

Current TWS documentation lists up to three matched batteries in series or eight in parallel when the required accessories, wiring, communication, protection, and installation practices are used.

Can I use my current lead-acid charger?

Do not assume compatibility. Use a LiFePO4 charging profile that matches the required battery voltage and current limits, and confirm any communication requirements.

How will the battery ship?

These are standalone high-capacity lithium batteries. Shipping method, approved packaging, dangerous-goods handling, cost, and delivery timing must be confirmed for the destination.

Ready to Compare the FlexiBlock Line?

Review all four models or contact United Lithium Solutions for help matching the battery to your equipment and operating requirements.

Compare Models Request Assistance

Product features, configuration limits, compatibility, shipping, included accessories, and warranty coverage vary by exact model. Review the individual product page and use qualified installation practices.