Big Battery 12V MultiPlus-II 120V Inverter/Charger - INV017
The MultiPlus-II is a multifunctional inverter/charger with all the features of the MultiPlus, plus an external current sensor option which extends the PowerControl and PowerAssist function to 100A.
A maximum grid or generator current can be set. The MultiPlus-II will then take account of other AC loads and use whatever is extra for battery charging, thus preventing the generator or grid from being overloaded (PowerControl function).
PowerAssist takes the principle of PowerControl to a further dimension. Where peak power is so often required only for a limited period, the MultiPlus-II will compensate insufficient generator, shore or grid power with power from the battery. When the load reduces, the spare power is used to recharge the battery.
The MultiPlus-II can be used in off grid as well as grid connected PV and other alternative energy systems. It is compatible with both solar charger controllers and grid-tie inverters.
What our Experts Think
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High‑current 24 V lithium charging — Delivers up to 30 A output, meaning faster and more efficient charging for 24 V LiFePO₄ battery banks compared with lower‑amp chargers.
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Weatherproof IP65 design — Dust‑tight and water‑resistant housing makes it rugged enough for outdoor, off‑grid, marine, or vehicle installations without worry.
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Stable, reliable power delivery — Engineered to maintain consistent, clean output, protecting sensitive lithium battery cells and extending battery life.
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Simple installation & use — Plug‑and‑play setup with clear connections makes it easy for DIYers and professionals alike.
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Built‑for versatility — Works well with a variety of 24 V lithium systems, making it a solid choice for solar, RV, boat, or backup power chargers.
Q&A
Q: What is the BigBattery 24 V 110 V AC 30 A IP65 Weatherproof Lithium Charger (29.2 V DC) — PWS014?
A: A heavy-duty, weather-resistant 24 V lithium battery charger that delivers up to 30 A at 29.2 V DC from a standard 110 V AC outlet — ideal for charging compatible 24 V LiFePO₄ battery banks.
Q: What environments is it designed for?
A: IP65 weatherproof rating allows safe use outdoors or in dusty, wet, or rugged conditions.
Q: What are its power and connection specifications?
A: Input: 110 V AC; Output: 29.2 V DC at up to 30 A; high efficiency (~93%); Anderson-style connector for quick battery hookup.
Q: Which batteries is this charger compatible with?
A: Specifically designed for 24 V lithium battery systems requiring a 29.2 V charging profile.
Q: What are the main benefits?
A: Fast and efficient 30 A charging, rugged IP65 all-weather design, compact and portable, and easy plug-and-play connection — suitable for off-grid setups, RVs, trailers, and outdoor battery stations.
Q: Is it suitable for outdoor and mobile applications?
A: Yes — weather-resistant build and Anderson connector make it ideal for garages, workshops, trailers, RVs, and other outdoor battery charging setups.
Q: What safety features are included?
A: Over-current, over-voltage, over-temperature, and short-circuit protection to ensure safe charging and prolong battery life.
Maintenance Tips
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Install the charger in a dry, well-ventilated area to maintain optimal 24V charging performance and prevent overheating.
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Inspect cables and connectors regularly for wear, corrosion, or looseness to ensure safe and stable operation.
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Clean the exterior with a soft, dry cloth; avoid water or solvents despite the IP65 rating.
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Avoid exposure to direct sunlight, extreme temperatures, or prolonged moisture to extend charger lifespan.
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Disconnect the charger when not in use for extended periods to protect internal components.
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Ensure the charger is used with compatible lithium batteries to maintain efficiency and prevent damage.
