Marine and automotive battery charger and maintainer designed to keep engines ready with selectable 12V/24V charging and automatic float maintenance, Battery Tender Onboard Battery Charger. Peace of mind for boat owners and workshop teams who need reliable, weatherproof power management. Is rugged construction and broad battery compatibility worth choosing for long-term use?
⚡ At a Glance
- • Charging Capability: Selectable 12V at 5A or 24V at 2.5A with automatic float maintenance
- • Best for: Boats, trailers and industrial machinery needing onboard battery maintenance
- • Not ideal for: Users who need a lightweight, portable charger for occasional carry-around use
Selectable voltage and automatic float mode maintain battery charge without overcharging. Heavy-duty, weather resistant design suits marine and industrial installations.
Reliable long-term maintenance - with automatic float mode
Charger delivers a full charge then switches to float mode to hold batteries at the correct voltage without continuous high current. Float maintenance replaces constant top-ups and prevents overcharging when batteries are stored or used intermittently.
Consistent voltage holding helps extend battery life and keeps engines ready after long periods of inactivity.
Works with multiple battery chemistries - thanks to selectable compatibility
Unit explicitly supports AGM, flooded, gel and lithium (LiFePO4) batteries and allows selection between 12V at 5A or 24V at 2.5A. Simple selection matches charger output to battery requirements for correct charging profiles.
One charger can manage different batteries across boats, vehicles and machinery, reducing the need for separate chargers.
Built for harsh conditions - with cast aluminium casing and IP67 rating
Cast aluminium construction resists shock and vibration while the IP67 rating indicates protection against dust and temporary immersion. Integrated mounting points allow secure onboard installation.
Robust housing and weather resistance mean dependable operation in saltwater, wet bilges and vibration-prone environments.
✨ The 4 Key Reasons for Battery Tender Onboard Battery Charger
- Spark-proof connection - Ensures safe lead connection without ignition risk in wet or confined spaces
- Reverse polarity protection - Locks connection to prevent incorrect wiring and damage
- Integrated mounting bracket - Simplifies onboard installation and secures charger to structure
- Industrial-grade aluminium housing - Resists vibration, corrosion and frequent marine use for long-term durability
📋 Technical Details at a Glance
- Category: Battery Charger and Maintainer
- Brand: Battery Tender
- Model: 022-0258-DL-WH
- Voltage/Amps: Selectable 12V at 5A or 24V at 2.5A
- Battery Types: Compatible with AGM, flooded, gel, lithium (LiFePO4)
❓ Frequently Asked Questions
Q: Can this charger be used with lithium (LiFePO4) batteries?
A: Yes, compatible with lithium (LiFePO4) batteries according to the product description.
Q: Is the unit suitable for mounting on a boat and exposure to the elements?
A: Yes, integrated mounting capabilities, a cast aluminium casing and an IP67 rating make it suitable for marine installations.
Q: How does the charger avoid overcharging batteries?
A: A full charge is delivered and then the charger switches to float mode to maintain correct voltage without overcharging.
🏆 Our Verdict
Suitable for boat owners, fleet operators and workshops that need a durable onboard charger for regular maintenance. Selectable 12V/24V operation, multi-chemistry compatibility and weatherproof aluminium construction make for dependable service in harsh conditions. While not the cheapest option, robust build quality and safety features deliver long-term value for demanding use.
