by MK Battery
Need to replace your MK Battery ES9-4 battery? When it comes to replacing the ES9-4, you'll want to check four things: Is it the same voltage? Is the same or similar capacity (measured in Amp Hours)? Is it the same terminal? Does it have the same dimensions?
Can you replace a MK Battery with another brand battery? Yes. We'll help you find the correct replacement battery, even if it is manufactured by another company. We only sell batteries that we fully stand behind. That means a 30-day, no questions asked return policy and a minimum 1 year warranty.