When a battery is being discharged the lead active material on the plates will react with the sulfate from the electrolyte forming a lead sulfate on the plates. During recharge, the lead sulfate is reconverted into lead active material and the sulfate returned to the electrolyte. If a battery is left in a discharged condition or is not properly recharged on a regular basis, the lead sulfate will become hard and have a high electrical resistance. This is what is normally called a sulfated battery. The lead sulfate may become so hard that normal recharge is unable to break down the lead sulfate crystals, rendering the battery near useless.

Traditional PWM vs Morningstar’s TrakStar™ MPPT Technology

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TriStar MPPT Processor A Firmware Update

v32b Firmware and above addresses EEprom access bugfix causing watchdog trip and subsequent lowside FET turn on.  This issue is generally limited to Controllers installed in applications utilizing all, or most, of the following items in the design.  -High I/O of Communications, -Read/Write of vb_ref register (0x0033), -Read/Write of ib_ref register (0x0058), -Write of battery current limit (0xE01D), -Coil command restart of controller, -48V Systems, -Oversized Arrays.  The following link provides instructions on updating firmware:   https://www.youtube.com/watch?v=J6Duwr5Tl-w&t=10s

 

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