In contrast, lithium-based batteries do not vent during the charge cycle. Lead-acid batteries that are installed in RVs require venting because of the hydrogen gas that is created when the battery is being charged. This was intended to protect consumers and manufacturers if a lithium battery was ever replaced with a lead-acid battery after purchase. When lithium batteries were included in the ANSI Low Voltage Standard, they were added to flooded, or lead-acid battery provisions that required all batteries located in the RV interior to be placed in vented battery compartments or boxes. ![]() The listing agency gives their independent stamp of approval which addresses thermal run-away, having a management or protection system to provide safety in situations of high/low voltages and temperatures, limiting high current output, and cell balancing. To be included in RV products, lithium batteries must be listed by a third-party listing agency recognized by the RV Industry Association. With the growing popularity of lithium batteries, they were added to the 2020 edition of RV industry’s adopted American National Standards Institute ( ANSI) Low-Voltage Standard. Over the past decade, lithium batteries have become more widely used due to their prolonged service life and high energy density, while costs have declined due to increase in production volume. RVs feature two different types of batteries, an automotive battery that is used to start the engine and a deep cycle battery, that is used to power the user’s electronics.
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