Bloc Power B2 Dash Cam Battery for Extended Parking Mode
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The Bloc Power B2 is a LiFePO4 dash cam battery pack from the Bloc Power range, designed to power your dash cam's parking mode without drawing on your vehicle's battery. It charges via ACC power while you drive and switches over automatically when the ignition is turned off.
This listing is the B2. The Bloc Power range is also available in the B3 12,000mAh (up to 50 hours parking mode).
Key specifications
- Battery type: LiFePO4 (lithium iron phosphate)
- ACC and DC input: 12V / 4–8A
- USB-A outputs: 2 ×, up to 20W each
- USB-C PD input/output: 1 ×, up to 45W
- Display: 1.65" LCD status display
- Operating temperature: 0°C to 45°C
- Expansion: link a second B2 battery using the optional expansion cable
Bloc Power Battery Pack B2
Bloc Power is a dedicated power solution for dash cam parking mode recording. It delivers clean, stable power to your dash cam, protecting your vehicle's battery and ensuring reliable overnight performance.
Features
- High-capacity LiFePO4 battery technology
- Fast charging while driving
- Extended dash cam parking mode recording
- 1.65" LCD status display
- Adjustable power timer
- 2 × USB-A fast-charging ports (up to 20W)
- 1 × USB-C PD fast-charging port (up to 45W)
- Built-in LED torch & emergency light
How a Bloc Power battery works
While the vehicle is running, ACC power charges the B2 and your dash cam simultaneously. When the ignition is switched off, ACC power stops and the B2 takes over automatically, keeping your dash cam running without any user input.
An intelligent built-in voltage detection system monitors engine status in real time, enabling seamless switching between driving and parking modes.
In a conventional hardwired setup, a dash cam drawing directly from the vehicle's main battery is typically limited to 1–3 hours of parking mode recording — rarely enough for overnight protection. The B2 significantly extends this, while eliminating drain on the vehicle's battery, supporting reliable engine starts and long-term battery health.
The B2's isolated power architecture also reduces the risk of interference with sensitive onboard electronics, including the ECU, and is simpler to install than traditional hardwiring methods.
Bloc Power battery run time
Actual parking mode run times vary depending on dash cam model, number of channels, and user settings. For longer run times, the Bloc Power B3 is rated for up to 50 hours.
Expansion
A second B2 battery pack can be connected to increase total capacity and extend parking mode recording time. A maximum of two batteries can be linked. The optional Bloc Power Expansion Cable is required to connect two units.
Explore the full range in BLOC Power.
Specification
| Battery | type LiFePo4 – Lithium Iron Phosphate |
|---|---|
| Capacity | 8,000 mAh/102.4Wh |
| Display | 1.65” LCD |
| Casework Material | Flame-resistant aluminium alloy and ABS |
| ACC Input | 12V/4-8A |
| DC Input | 12V/4-8A |
| USB-A output | 5–12V - up to 20W |
| USB-C input/output | 5–20V - up to 45W |
| Operating temperature | 0°C - 45°C |
What's Included
- BLOC POWER battery pack (B2)
- Hardwire Input/Output Cable
- 12V Cigarette lighter socket power cable
- Cigarette lighter socket output adaptor
- Velcro strips x 2
- User guide
BLOC Power
About the BLOC Power B2
From our tech experts at CEN
The Bloc Power B2 is an 8,000mAh LiFePO4 dash cam battery pack that powers your dash cam's parking mode without drawing on your vehicle's battery. It charges via ACC power while you drive and switches over automatically when the ignition is off. The B2 has a 1.65" LCD status display and two USB-A ports (up to 20W each) plus one USB-C PD port (up to 45W).
Who it suits
Drivers who want reliable overnight parking mode recording without draining their vehicle's battery. A second B2 can be linked using the optional expansion cable to increase total capacity. For up to 50 hours of parking mode, consider the Bloc Power B3.
Our tech experts advise
The B2 operates between 0°C and 45°C, so avoid installing it near heat sources. It connects via the included hardwire cable or the 12V cigarette lighter socket cable, depending on your setup. Actual parking mode run times vary by dash cam model, channel count, and resolution settings. See the Bloc Power range for accessories including the optional expansion cable.
Explore the full BLOC Power range at CEN, with fast UK dispatch and expert advice from our Nottingham team. Shop all BLOC Power
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Frequently Asked Questions
Q: Is this accessory compatible with my dash cam?
A: Dash cam accessories are generally model-specific. The compatible camera models are listed in the product description, and you can contact CEN to confirm compatibility before ordering.
Q: What does a hardwire kit do?
A: A hardwire kit powers your dash cam directly from the vehicle's fusebox, hiding the cable and enabling parking mode. Kits include battery protection so your car battery is never drained below a safe level.
Q: Why would I add a dash cam battery pack?
A: A battery pack powers parking mode for longer periods without drawing on your car battery at all. It charges while you drive and is the recommended option for extended parking protection.
Q: Can CEN fit this accessory?
A: Yes. CEN offers professional dash cam and accessory installation from our Nottingham premises. Contact us to book.
Q: Can I connect a second BLOC POWER battery?
A: Yes. A maximum of two batteries can be linked to increase capacity and parking mode recording time. The optional BLOC POWER Expansion Cable is required.
Q: Can the B2 charge my phone or other devices?
A: Yes. It has two USB-A fast-charging ports (up to 20W) and one USB-C PD port (up to 45W), plus a built-in LED torch and emergency light.
Q: What is in the box with the BLOC POWER B2?
A: The B2 battery pack, a hardwire input/output cable, a 12V cigarette lighter socket power cable, a cigarette lighter socket output adaptor, two Velcro strips and a user guide.
