# Best RV Battery Chargers Source: https://rvupgradehub.com/best/best-rv-battery-chargers Updated: 2026-09-15 Publisher: RV Upgrade Hub. Our score is an editorial rating out of 10 (fit 35%, features 25%, build 20%, value 20%), not a customer rating. Method: https://rvupgradehub.com/how-we-research#our-score An RV battery charger, often built into your converter, replenishes your house batteries from shore power, a generator, or solar and keeps them topped off without overcharging. It matters to every RVer because a dead or sulfated battery bank cuts your lights, water pump, and fridge controls short. When shopping, choose a multi-stage smart charger that automatically moves through bulk, absorption, and float stages to extend battery life. Match the charger to your battery chemistry, lithium banks need a charger with a dedicated lithium profile, while AGM and flooded batteries have different voltage needs. Check amperage output against your bank size, look for temperature compensation, reverse-polarity protection, and quiet operation if the unit lives inside your living space. ## Picks ### 1. PD9280 RV Power Converter Charger 80 Amp for Progressive Dynamics Inteli-Power 9200 Series with Built-in Charge Wizard Our score: 8.6/10 (Fit for the job 9/10 · Features and specs 9/10 · Build and materials 8/10 · Value 8/10) A PD9280 80 Amp RV converter charger for the Progressive Dynamics Inteli-Power 9200 Series, with built-in Charge Wizard. Pros: - Charge Wizard automatically chooses the right charging mode - 80 Amp output quickly recharges large lead-acid banks - Designed as a drop-in for Inteli-Power 9200 Series panels Cons: - Only a direct fit for Progressive Dynamics 9200 Series setups - Standard Charge Wizard is tuned for lead-acid, not lithium Details: https://rvupgradehub.com/product/B0GVN1W3FY ### 2. PowerMax PM4-35A 35 Amp RV Power Converter Charger, 12V Smart 4-Stage Battery Charger, 110V AC to 12V DC, Adjustable 13-16.5V Output, Lithium Compatible Our score: 8.3/10 (Fit for the job 8/10 · Features and specs 9/10 · Build and materials 8/10 · Value 8/10) PowerMax's PM4-35A 35 Amp smart 4-stage RV converter charger, 110V AC to 12V DC with adjustable 13-16.5V output. Pros: - Adjustable 13-16.5V output can be tuned for lithium batteries - Smart 4-stage charging helps extend battery life - 35 Amp size suits smaller trailers with modest 12V loads Cons: - 35 Amp output is slow for recharging large battery banks - Adjustable voltage must be set correctly to avoid overcharging Details: https://rvupgradehub.com/product/B01ER3LH52 ### 3. PowerMax PM3-75 RV Power Converter, 110 Volt to 12 Volt DC Power Supply Charger with 75 Amp Capacity Our score: 8.0/10 (Fit for the job 8/10 · Features and specs 8/10 · Build and materials 8/10 · Value 8/10) PowerMax's PM3-75 RV power converter, a 110 Volt to 12 Volt DC power supply charger with 75 Amp capacity. Pros: - 75 Amp capacity supports larger 12 Volt loads in big rigs - PowerMax converters are a common aftermarket replacement - Works as a clean power supply as well as a battery charger Cons: - Check whether it supports lithium or multi-stage charging - Cooling fan noise can be noticeable in quiet campsites Details: https://rvupgradehub.com/product/B00F8MC43Q ### 4. Renogy 12V 20A Lithium Battery Charger, IP67 Waterproof Smart Charger with Anderson Connector & BMS Activation for LiFePO4, AC-to-DC Portable Maintainer for RV Boat Our score: 7.6/10 (Fit for the job 7/10 · Features and specs 8/10 · Build and materials 8/10 · Value 8/10) Renogy's 12V 20A IP67 waterproof smart lithium battery charger with Anderson connector and BMS activation for LiFePO4. Pros: - BMS activation can wake a lithium battery that has shut itself off - IP67 waterproof body can sit in damp storage bays - Portable maintainer keeps stored RV and boat batteries topped up Cons: - 20A output is slow for charging a large bank from empty - Anderson connector may need an adapter for your battery leads Details: https://rvupgradehub.com/product/B08C2JN76Q ### 5. RV Converter, Multiple Capacities RV Power Converter RV Battery Charger (75-AMP) Our score: 6.8/10 (Fit for the job 7/10 · Features and specs 6/10 · Build and materials 6/10 · Value 8/10) A 75-AMP RV power converter and battery charger, sold in multiple capacities to replace a failing onboard unit. Pros: - 75-AMP capacity runs house lights and fans while charging batteries - Multiple capacities let you match your original converter size - Direct swap can revive dim lights caused by a failing old unit Cons: - Check the charging profile supports lithium batteries - Hardwired install requires basic electrical skill and care Details: https://rvupgradehub.com/product/B0C4NKGJWY ### 6. RV Battery Charger Converter Our score: 5.0/10 (Fit for the job 5/10 · Features and specs 4/10 · Build and materials 5/10 · Value 6/10) A generic RV battery charger converter with no capacity or brand listed, a vague option for replacing an onboard converter. Pros: - Converter charger combines a DC power supply and battery charging - Suits owners replacing a basic factory converter - Simple unit with few settings for straightforward installs Cons: - Check the amp rating fits your rig before buying - Vague listing gives no charging stages or battery chemistry support Details: https://rvupgradehub.com/product/B07Q5VYPCF As an Amazon Associate I earn from qualifying purchases.