FlexiBlock 12V100Ah Lite with self-heating Reliable Power in a Compact Block

The FlexiBlock 12V100Ah Lite by TWS is a versatile LiFePO₄ battery engineered for motive and stationary applications. With advanced safety protections, fast charging capability, and Bluetooth monitoring, this battery is designed for dependable energy storage across a wide range of environments.

Rated IP67 waterproof and dustproof, the FlexiBlock is built tough for harsh conditions while remaining lightweight and easy to install. It can be placed horizontally or vertically, and supports both parallel and series connections for scalable energy solutions.

Key Features

• Lithium Iron Phosphate (LiFePO₄) chemistry for long cycle life (6000+ cycles @ 80% DoD).

• Fast charging — recharge in as little as 2 hours.

• Optional self-heating function for reliable performance in low temperatures.

• Stackable design — supports up to 3 in series (38.4V) or 8 in parallel (up to 10.24 kWh).

• Intelligent BMS with 20+ built-in protections against over-voltage, over-current, over-temperature, and short circuits.

• Bluetooth monitoring via the MyTWS App (iOS/Android).

• Lightweight and durable — only 28.4 lbs with a rugged IP67 UltraSeal case.

Specifications

Electrical

• Chemistry: LiFePO₄

• Nominal Voltage: 12.8V (Max 14.2V)

• Nominal Capacity: 100Ah

• Energy: 1.2 kWh

• Continuous Charge Current: 50A

• Continuous Discharge Current: 100A

• Peak Discharge: 250A (<10s)

• Cycle Life: 6000+ cycles (@ 25°C, 80% DoD)

• Communication: CAN / CANOpen / Bluetooth

Mechanical

• Dimensions: 394 × 179 × 189 mm (15.5" × 7.1" × 7.44")

• Weight: 12.9 kg (28.4 lbs)

• Terminals: M8

• Orientation: Horizontal or Vertical

• Case Rating: UL94 V-0 flame retardant

• Ingress Protection: IP67

Operating Conditions

• Charge Temp: -10°C ~ 55°C (14°F ~ 131°F)

• Discharge Temp: -20°C ~ 55°C (-4°F ~ 131°F)

• Storage Temp: -20°C ~ 30°C (3 months), -20°C ~ 55°C (1 month)

• Humidity: 25% ~ 90% operating, <50% storage

Certifications

• CE, RoHS, UN38.3

Applications

• Solar energy storage

• RVs, campers, and boats

• Off-grid power systems

• Backup and UPS systems

• Industrial and motive equipment

Package Includes

• 1 × FlexiBlock 12V100Ah Lite Battery

• 2 × Power Cables

• 2 × M8 Bolts

• 1 × Communication Cable

• Series/Parallel Connector

• User Manual

Warranty

Covered by a 5-Year Limited Warranty against manufacturing defects.

Downloads

Download Technical Data Sheet
Download User Manual