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More complex jobs like a main board replacement can range from R4,000 to over R15,000. Simple repairs like a fuse or fan replacement can cost between R800 and R2,000. Your installer or technician will confirm the details based on your setup.

A rapid drop in backup time usually points to the batteries. Error codes, strange noises, or a total failure to power on often indicate an inverter fault. A Kandua professional diagnosis is the only way to be certain. A qualified professional can provide specific guidance for your situation.

Standard lead-acid batteries typically last 2-5 years. Modern Lithium-ion (LiFePO4) batteries can last 8-15 years with proper care. Lifespan depends on the type and usage.

Here's what you need to know. If the repair cost is more than 60% of the price of a new, comparable unit, it's usually more cost-effective to replace it. A new inverter will come with a full warranty and better efficiency, and this is especially relevant for Johannesburg residents.

Old batteries will reduce the performance and shorten the lifespan of the new ones. This is strongly discouraged. Always replace all batteries in a bank at the same time.