Flooded & AGM Lead-Acid (12V Nominal)
Temperature compensation matters: lead-acid charging voltage should shift roughly −0.0167V per °F per cell (a 6-cell 12V battery) as ambient temperature rises or falls from 77°F (25°C).
Power guide
Battery charging voltage chart by chemistry
REFERENCE 25-00 · BATTERIES & ENERGY STORAGE Reference charging voltages for 12V nominal lead-acid (flooded/AGM) and LiFePO4 battery banks.
Active corridor: Montana · Wyoming · Idaho · Washington — case-by-case beyond.
Field notes
REFERENCE 25-00 · BATTERIES & ENERGY STORAGE Reference charging voltages for 12V nominal lead-acid (flooded/AGM) and LiFePO4 battery banks. Charging the wrong chemistry with the wrong profile is one of the most common causes of premature battery failure we see in the field.
LiFePO4 (12V Nominal)
These figures reflect common defaults from Victron and Battle Born — always confirm against your specific battery/BMS manufacturer’s published settings, since LiFePO4 charge profiles vary more between brands than lead.
Never Mix Charge Profiles
A converter or inverter/charger set for lead-acid absorption/float behavior will chronically undercharge a LiFePO4 bank (never reaching full capacity) or, on some older non-adjustable units, can fail to properly termi.
Related Reference Pages
Wire Ampacity & Voltage-Drop Chart Battery & Charging Systems Guide LiFePO4 Battery Buying Guide Full Field Guide
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Pricing teaser
Trip fee $75 within 30 miles, then $1.50/mi. Labor ~$150/hr (1-hour minimum, billed in 30-minute increments). Diagnostic $175 applied toward repair if you proceed.
Active corridor: Montana · Wyoming · Idaho · Washington — case-by-case beyond. Credentials (text): Victron Professional Certified Installer · weBoost Authorized Installer · Peplink Certified Associate · Dometic Professional Certified.