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What are Storage Voltage, Repeated Absorption Time & Repeat Interval in MPII?
I’m looking into the battery maintenance features of my MultiPlus-II 230V inverter and came across terms like ‘Storage Voltage’, ‘Repeated Absorption Time’, and ‘Absorption Repeat Interval’ in the manual. Could you break down what each of these settings means and how they contribute to battery health and longevity?
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These settings are all about ensuring your battery is not just charged but maintained in a way that promotes its health and extends its lifespan.
Storage Voltage:
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This setting refers to the voltage the charger maintains when the battery is fully charged but not in active use.
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The idea is to keep the battery at a voltage that’s high enough to keep it fully charged but low enough to prevent damage from overcharging.
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For example, if your absorption voltage is set to 14.4V for a 12V battery, the storage voltage might be around 13.2V. This helps in reducing gassing and corrosion of the positive plates, which are common causes of battery degradation over time.
Repeated Absorption Time:
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This feature is about giving your battery ‘top-up’ charges to ensure every cell is equally charged.
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After the initial bulk and absorption phases, the charger can periodically return to absorption voltage for a short duration.
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This repeated absorption helps equalize charge across all cells, which is especially beneficial for multi-cell lead-acid batteries.
Absorption Repeat Interval:
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It’s the schedule for these ‘top-up’ charges, dictating how often the charger re-enters the absorption phase during extended float charging.
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It could be configured to trigger every day, every few days, or once a week, depending on the battery’s needs and the manufacturer’s recommendations.
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This regular interval helps to prevent the battery from falling into states that can shorten its life, such as sulfation or stratification.
Together, these settings form a comprehensive maintenance regime for your batteries when using the MultiPlus-II 230V. They are fine-tuned to deliver not just charge but also care for your batteries, keeping them ready and in optimal condition for when you need them.
It’s important to set these parameters correctly in line with your specific battery type’s requirements. For precise configurations, you can use the VEConfigure tool provided by Victron Energy to adjust these settings to match the battery manufacturer’s specifications. This proactive approach to battery maintenance can significantly impact the performance and lifespan of your energy storage solutions.
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