The Bronson Outdoor 12V Lithium-Ion Battery
The Bronson Outdoor MB series is designed for outdoor use. All battery elements are housed in a portable, dustproof, and waterproof hard case (IP67).
This light, durable and easy-to-use battery meets all requirements for wind, weather and water applications. It is particularly suitable for the operation of 12V boat engines.
Waterproof connections
Security is a top priority. That is why Bronson Outdoor products have waterproof (IP67) push-in connectors for safe outdoor use. The motor connection can be simply plugged in and snaps firmly into the lock. Use our special motor connection with instructions for connecting your boat motors. The installation does not require any special knowledge and only takes five minutes.
Charge status display
To enjoy your adventure, even more, the Bronson outdoor battery series offers you easy control options with a charge level indicator and an on/off switch. The LED display shows the charge level of your battery at 20% in five steps. The display lights up so that you can keep an overview even in daylight.
USB Connection
Outside you are often instructed on different energy consumers. The 5V 2.1A USB connection enables you to operate energy consumers other than the boat engine.

NOTE: The USB port is not IP67 waterproof when the cap is open. The USB port is not compatible with some Apple products, especially iPhones.
Handle and case
The Bronson outdoor batteries are portable and robust. The batteries are easy to carry with a large non-slip rubber handle. The robust hard case with reinforcements protects the battery cells from injuries and minor vibrations.
Light & compact
The Bronson Outdoor MB series comes in three sizes to satisfy different needs: small and light for short pleasures, or powerful and compact for big adventures.
MB 35
12V 35Ah lithium-ion battery
€299,00
MB 55
12V 55Ah lithium-ion battery
€489,00
MB 100
12V 100Ah lithium-ion battery
€739,00
Type of battery
NMC
NMC
NMC
Voltage
14,4V DC
14,4V DC
14,4V DC
Wide voltage range
11,5V – 16,4V DC
11,5V – 16,4V DC
11,5V – 16,4V DC
Charging voltage
16,8V DC
16,8V DC
16,8V DC
Capacity
500 Wh
800 Wh
1500 Wh
Weight
3,9 Kg
6,1 Kg
10,1 Kg
Dimensions (L x W x H)
265 x 215 x 125 mm
320 x 270 x 155 mm
335 x 305 x 165 mm
Protection level
IP67
IP67
IP67
Overvoltage protection
MB 35
MB 55
MB 100
Overcharging protection
MB 35
MB 55
MB 100
Deep discharge protection
MB 35
MB 55
MB 100
High temperature protection
MB 35
MB 55
MB 100
Protection against short circuits
MB 35
MB 55
MB 100
Automatic cell balancing
MB 35
MB 55
MB 100
USB
5V 2,1A Typ A
5V 2,1A Typ A
5V 2,1A Typ A
Compatible standard charger
5A MB 35
10A MB 55
20A MB 100
Compatible quick charger
10A MB 35
20A MB 55
40A MB 100
ø operating time
≈ 1 – 2 h
≈ 1,6 – 3,2 h
≈ 3 – 6 h
ø distance
≈ 4 – 8 km
≈ 6 – 12 km
≈ 12 – 24 km
Suitable for
e.g. Minn Kota Endura
e.g. Minn Kota Endura
e.g. Minn Kota Endura
MB 35
MB 35
12V 35Ah lithium-ion battery
€299,00
Type of battery
NMC
Charging voltage
16,8V DC
Capacity
500 Wh
Weight
3,9 Kg
Dimensions (L x W x H)
265 x 215 x 125 mm
Compatible quick charger
Array
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MB 55
MB 55
12V 55Ah lithium-ion battery
€489,00
Type of battery
NMC
Charging voltage
16,8V DC
Capacity
800 Wh
Weight
6,1 Kg
Dimensions (L x W x H)
320 x 270 x 155 mm
Compatible quick charger
Array
Mehr Erfahren
MB 100
MB 100
12V 100Ah lithium-ion battery
€739,00
Type of battery
NMC
Charging voltage
16,8V DC
Capacity
1500 Wh
Weight
10,1 Kg
Dimensions (L x W x H)
335 x 305 x 165 mm
Compatible quick charger
Array
Mehr Erfahren
MB Starter Kits
Our starter kits include an MB battery, a waterproof plug for connection to your motor, or other 12V equipment, as well as a standard or quick charger. This allows you to halve the loading time. Choose according to your needs.