Quick Summary
The DR.PREPARE Smart Battery Box is a marine battery box for Group 31 batteries, with compatibility for Group 27 and Group 24 batteries. It is a battery box only, so the battery is not included. The box adds USB, 12V/24V cigarette lighter and Anderson ports, turning a placed battery into a portable power centre for marine, RV, camping and solar setups.
It also includes an LED screen for battery voltage monitoring, an On/Off power switch and protection features for the ports. The stated carrying capacity is 77 lbs (35 kg).
Key Details
| Detail | Verified information and buyer relevance |
|---|---|
| Brand | DR.PREPARE. |
| Product type | Smart battery box for creating a portable power centre around a fitted battery. |
| Battery compatibility | Fits Group 31, Group 27 and Group 24 batteries. |
| Battery included | No. The battery is not included. |
| Power connections | 12V/24V cigarette lighter socket, USB-C PD, USB-A QC 3.0, dual Anderson input/output ports and high-current terminal connectors. |
| Protection | 30A replaceable blade fuse on each Anderson port, plus a 10A resettable circuit breaker for the USB ports and cigarette lighter socket. |
| Monitoring | LED screen shows battery voltage and low-voltage alerts. |
| Carrying capacity | 77 lbs (35 kg), which is an important check if weight and handling matter. |
What to Compare Before Buying
- Battery size: This box fits Group 31, 27 and 24 batteries. Check the battery group you plan to use before ordering.
- Power connections: Compare the USB, cigarette lighter and Anderson options with the devices you want to power or charge.
- Weight: The stated carrying capacity is 77 lbs (35 kg). Make sure your battery stays within that limit.
- Power control: The On/Off switch and voltage display are useful if you want basic monitoring and a simple way to isolate the outputs.
- Included battery: This is a box-only product, so allow for a separate battery if you do not already have one.
What Else You May Need
A compatible battery is required because the box does not include one. If you plan to charge from solar, use a charge controller rather than connecting a solar panel directly to the Anderson port.
Important Limitations
The battery box is designed around the stated battery group sizes and load limit, so it should not be treated as a universal fit. The Anderson ports use replaceable 30A blade fuses, and replacement fuses are not included. The power switch is also meant to be turned off when the box is not in use to reduce standby drain.
Before You Decide
Confirm the battery group size, the 77 lbs (35 kg) carrying capacity and the port types you need before choosing an offer. Also check whether you already have a suitable battery, because this box does not include one. If you want solar charging, plan to use a charge controller with the Anderson connection.
