12V DC-to-DC Battery Charger 30A 375W, Multi-Stage

DC to DC battery charger 12V 30A delivers fast, stable on-board charging to keep your auxiliary battery ready in RVs, trucks, boats, and yachts. Smart multi-stage charging supports lithium (LiFePO4) and lead-acid batteries (AGM, GEL, flooded), helping reduce undercharging and extend usable battery life. An aluminum alloy housing with pre-drilled mounting holes makes installation straightforward, while isolated input/output helps protect your vehicle electrical system from interference.

• Delivers up to 30A charging current with 375W max output for efficient auxiliary battery charging


• Supports lithium and lead-acid profiles with smart 2-stage/3-stage charging for consistent results


• Protects with over/under voltage, over-temp, and reverse polarity safeguards plus I/O isolation


• Installs easily using compact aluminum alloy casing and pre-drilled mounting holes


• Revives resting batteries with lithium activation to help recover deeply discharged packs

Built for demanding mobile power systems, this on-board DC-DC charger works across common alternator setups and battery chemistries used in commercial vehicles and marine applications. The controlled charging voltage ranges help maintain safer, more predictable charging than basic split-charge methods, especially when running modern lithium or mixed battery banks. If you need dependable charging while driving or underway—without complicated monitoring—this unit is a practical upgrade for your electrical system. Grab yours today and keep your backup power ready when it matters.

• Input voltage: 12V DC (input battery voltage range: DC 8V–16V)


• Charging current: 30A


• Maximum output power: 375W


• Charging voltage range (lead-acid): 13.2V–14.7V


• Charging voltage range (lithium): 12.6V–14.6V


• Charging stages: LiFePO4 (2-stage); Lead-acid (3-stage: bulk/absorb/float)


• Operating temperature: –20°C to 50°C (4°F to 122°F)


• Casing material: Aluminum alloy


• Net weight: 1.2 kg (2.65 lb)


• Compatible battery types: Lead-acid (AGM, GEL, flooded) and lithium