Can I replace a 3000mAh battery with 5000mAh?
You can always replace faulty batteries with higher mah, different from the defaults. That is, the myth that high-capacity batteries in phones are unsuitable for replacement is not entirely correct. A higher mah battery generally provides longer usage time between charges, making it better for heavy users or power-hungry devices. However, it also depends on the device’s energy efficiency and your usage habits.Broadly speaking, the higher the mAh, the longer the battery is likely to last between charges. For example, a 500mAh prefilled device might struggle to last a full day, while devices like the Adept Zlide with its 3000mAh battery can last several days before needing a charge.
Can I replace a 7Ah battery with a 9Ah?
When it comes to replacing a 12V 7Ah battery with a 12V 9Ah battery, it is generally safe to do so. The higher capacity of the 12V 9Ah battery means it can provide longer backup power or run time compared to the 12V 7Ah battery. They are all the same physical size and of the same voltage. The only difference is that the 9Ah will last nearly 30% longer between charges compared to the original 12V 7Ah amp batteries. No harm will come to your system from increasing amperage.