Practical guidance for choosing, sizing, charging, installing and maintaining LiFePO4 battery systems for RVs, boats, golf carts, solar and off-grid power.
Every guide is filed under one topic. Pick the one that matches your project.
New to lithium? These guides cover the chemistry and the most common installations: RV, marine and golf cart.
Battery BasicsUpdated 2 min read
LiFePO4 batteries, also known as LFP batteries, are dominating the battery industry. These batteries are composed of lithium iron phosphate, distinguishing them from other types like Lithium Cobalt Oxide or Lithium Manganese Oxide.
By Stephen Davenport
RV & VanUpdated 15 min read
Learn how to choose the right lithium battery for your RV, camper, or van based on battery size, capacity, solar setup, charging, inverter loads, and off-grid use.
By Stephen Davenport
Marine & Trolling MotorUpdated 14 min read
Learn how lithium marine batteries compare to lead-acid and AGM batteries for boats, trolling motors, deep cycle use, charging, runtime, safety, and long-term value.
By Stephen Davenport
Golf CartUpdated 15 min read
Learn how to upgrade to lithium golf cart batteries, including 36V, 48V, and 72V options, conversion kits, cost, runtime, and what to know before replacing lead-acid batteries.
By Stephen Davenport
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Charging & InvertersPublished 10 min read
Learn why a Victron battery monitor and LiFePO4 battery app may show different SOC percentages and what to check before assuming there is a battery problem.
By Stephen Davenport
Battery BasicsPublished 9 min read
Learn what UL, ETL, CSA, and TÃœV marks mean for lithium batteries and why the testing standard, product scope, and certification details matter.
By Stephen Davenport
Charging & InvertersPublished 8 min read
Learn how to size a LiFePO4 battery bank for a Victron inverter based on system voltage, inverter wattage, discharge current, surge loads, and runtime.
By Stephen Davenport
System Design & WiringPublished 7 min read
Learn why LiFePO4 batteries connected in series can drift out of balance and how an active battery balancer helps reduce shutdowns and lost capacity.
By Stephen Davenport
Charging & InvertersUpdated 12 min read
Learn how to choose a Victron-compatible LiFePO4 battery based on voltage, inverter size, BMS limits, communication, charging settings, and runtime needs.
By Stephen Davenport
System Design & WiringPublished 15 min read
Learn why LiFePO4 batteries connected in series can become unbalanced, how it affects charging and runtime, and why an active battery balancer matters.
By Stephen Davenport
BMS & TroubleshootingPublished 12 min read
Learn how Epoch can help companies build custom OEM and ODM LiFePO4 battery projects with tailored voltage, capacity, BMS features, branding, and support.
By Stephen Davenport
Safety & CertificationsPublished 12 min read
Learn why lithium batteries may have different UL certification numbers, what UL listings mean, and how to verify certification details for a specific battery model.
By Stephen Davenport
System Design & WiringPublished 9 min read
Learn what to check before adding more LiFePO4 batteries later, including battery model, voltage, capacity, age, wiring, charger size, and parallel limits.
By Stephen Davenport
Charging & InvertersPublished 6 min read
Learn why a LiFePO4 battery may drain faster than expected, including inverter loads, hidden power draws, SOC drift, battery sizing, and temperature.
By Stephen Davenport
Marine & Trolling MotorPublished 8 min read
Starting vs. deep-cycle battery explained, including key differences, benefits, uses, marine applications, and tips to choose the right battery for your needs.
By Stephen Davenport
Charging & InvertersUpdated 9 min read
Learn how to estimate how long a LiFePO4 battery will run an inverter based on battery capacity, load wattage, inverter efficiency, and usable energy.
By Stephen Davenport
System Design & WiringPublished 7 min read
Learn how to estimate how many LiFePO4 batteries you need based on battery capacity, runtime, inverter size, system voltage, and your power usage.
By Stephen Davenport
RV & VanUpdated 8 min read
Best lithium battery and power system for RVs, vans, and campers. Learn battery sizing, solar charging, off-grid power, and reliable travel energy solutions.
By Stephen Davenport
BMS & TroubleshootingPublished 9 min read
Learn why a LiFePO4 battery may show full voltage but a low percentage, including SOC drift, monitor calibration, voltage behavior, and app readings.
By Stephen Davenport
System Design & WiringUpdated 12 min read
Learn how to choose the right inverter size for a LiFePO4 battery based on battery voltage, discharge current, surge loads, wiring, and battery bank size.
By Stephen Davenport
Charging & InvertersPublished 11 min read
Learn when an existing charger may work with a Li matter.
By Stephen Davenport
BMS & TroubleshootingPublished 7 min read
Learn why LiFePO4 battery voltage may drop under load, including high current demand, inverter loads, low SOC, cable sizing, wiring issues, and BMS protection.
By Stephen Davenport