SuperBatt CB110 vs SuperBatt DT120
We compare the SuperBatt CB110 and the SuperBatt DT120 across every dimension that matters - our scores, the key specs, and how each performs on the things you will actually notice day to day.
At a glance
| SuperBatt CB110 | SuperBatt DT120 | |
|---|---|---|
| Our score | 9.1/10 | 8.6/10 |
| Best for | Dependable, affordable off-grid power for caravans, motorhomes and boats | Dependable, affordable off-grid power for caravans, motorhomes and boats |
| Not ideal for | Heavy daily cycling where lithium's longer life would pay back | Heavy daily cycling where lithium's longer life would pay back |
| Brand | SuperBatt | SuperBatt |
Battery Type and Chemistry
SuperBatt CB110
The leisure battery presents the CB110 as a leisure and deep-cycle battery, intended for regular sustained power draw rather than short high-current cranking. That usage profile aligns with caravan, motorhome and marine setups where loads typically run for extended periods and the discharge pattern is steadier. The build type supports repeated discharge and recharge cycles, which is a defining feature of deep-cycle units. The key limitation is this lack of chemistry detail, since matching the battery to the correct charger type and operating conditions depends on the chemistry.
SuperBatt DT120
This leisure battery is a 12V deep-cycle leisure and marine battery. Deep-cycle batteries are designed for repeated discharging and recharging over longer periods, making this type suitable for running accessories for extended sessions, such as on boats or caravans, rather than for short bursts of high starting power. The product is also described as intended to replace other deep-cycle models such as 12V 110Ah or 12V 105Ah units, but any chemistry-specific compatibility should be verified first.
Capacity and Real Usable Power
SuperBatt CB110
With a stated rating of 12V and 110Ah, the SuperBatt is intended to store energy for steady, longer runs such as caravan, motorhome, and marine loads, rather than short bursts that need cranking power. "Usable power" depends on how much of the rated capacity can be drawn before performance drops, because deeper discharge typically reduces the remaining capacity. The background information does not specify the battery chemistry, so the relationship between rated Ah and safely usable capacity cannot be confirmed, and exact usable capacity figures are therefore not stated. Any calculation based on 110Ah at 12V, daily loads, and allowance for inefficiencies and wiring losses would remain dependent on the load profile and discharge depth.
SuperBatt DT120
Despite it being marketed as a 12V 120Ah deep-cycle leisure and marine battery, the 120Ah figure is a stated capacity, not a guarantee of how much power will be usable in every situation. Usable energy depends on how deeply the battery is discharged, because drawing beyond the intended portion reduces available energy and increases stress on the battery. The DT120's rated capacity indicates it is intended to support steady loads for longer than smaller units, but results vary with wiring losses, operating temperature, and the size of the current draw. Consumers should confirm the intended discharge level and match the battery to the requirements of their device.
Cycle Life and Durability
SuperBatt CB110
Cycle life and durability are important because a deep-cycle leisure battery is designed for repeated charge and discharge, and real-world longevity depends on both how deeply it is discharged and how it is recharged. For the leisure battery (12V 110Ah, deep cycle for caravan, motorhome, marine), long-term performance is primarily affected by the owner's usage pattern rather than the rated capacity alone. If discharges are taken too deep, internal wear can accelerate and later cycles can deliver less usable power. Shallower discharges with prompt recharging typically help the battery last longer.
SuperBatt DT120
Cycle life and durability matter because deep-cycle leisure and marine batteries are designed for repeated charge and discharge cycles. The SuperBatt (79GY) is a 12V 120Ah deep cycle leisure and marine battery intended for that kind of ongoing use. Durability is influenced by discharge depth, charging consistency and operating conditions, as capacity losses can develop gradually over time. Heat also reduces lifespan, so storage and use temperature are relevant considerations for long-term performance.
Fitting and Charging
SuperBatt CB110
How this leisure battery (a 12V 110Ah deep-cycle leisure battery used for caravan, motorhome, and marine boat setups) is fitted and charged can make a bigger difference to day-to-day usability than cycle-life expectations alone. First, it should be secured upright or as allowed by the installation, with clean, tight cable connections. Next, the battery cables need correct polarity, and terminals should be protected from corrosion, for example with a thin coating. For charging, use an appropriate 12V charger and avoid guessing settings, because mismatched charge profiles can underfill the battery or overheat it. If charging is unreliable, check the cables and charger output.
SuperBatt DT120
When fitting and charging a deep-cycle leisure or marine battery such as the leisure battery (12V 120Ah), the priority is to connect it safely and match the charger to the battery correctly. Buyers should confirm the battery area is vented and that the terminals are dry, then secure the battery to prevent movement. Next, he connects the positive lead first, then the negative, keeping cables clear of sharp edges and metal. For charging, he uses a charger intended for 12V batteries and follows the charger's settings rather than guessing. If the battery becomes warm or shows faults, he stops charging and rechecks the wiring before continuing.
Who Is This For?
SuperBatt CB110
The SuperBatt CB110 is suitable for people who need a 12V 110Ah deep-cycle leisure battery for caravan, motorhome, or marine boat use, particularly where the battery is expected to support regular accessory loads over time. It is relevant for setups that run onboard items away from mains power, including lights and charging equipment. It also fits marine applications where space and load planning are part of the battery choice. It is not ideal for anyone needing an engine-start or cranking battery role.
SuperBatt DT120
This battery suits people who need a 12V deep-cycle leisure or marine option, including replacement use when moving from a 12V 110Ah or 12V 105Ah battery to the SuperBatt rated at 120Ah. It is aimed at buyers looking for a like-for-like capacity level within a 12V system, rather than switching voltage. Because it is described for leisure and marine deep-cycle use, it can be relevant for caravan use, boat use, and other applications with steady loads over time.
SuperBatt CB110: pros
- Deep-cycle leisure battery
- 110Ah at 12V
- Suits caravan, motorhome, marine
- Proven, affordable off-grid power
Cons
- Only around half the rated capacity is safely usable
- Heavier and shorter cycle life than lithium
- Match the capacity to your real daily power draw
SuperBatt DT120: pros
- Deep-cycle leisure battery
- 120Ah at 12V
- Suits marine
- Proven, affordable off-grid power
Cons
- Only around half the rated capacity is safely usable
- Heavier and shorter cycle life than lithium
- Match the capacity to your real daily power draw
Our verdict
Our pick is the SuperBatt CB110 (our score 9.1/10) - A practical leisure battery (deep-cycle, 110Ah) for off-grid and leisure power. The SuperBatt DT120 is still worth it if it is cheaper when you check, or if it better matches your specific needs.