How to Check the Battery of Manta Underwater Scooter - Sea Scooter not Working after Full Charged
![How to Check the Battery of Manta Underwater Scooter - Sea Scooter not Working after Full Charged](http://seascooter.co/cdn/shop/articles/step1-Prepare-a-multimeter-and-set-it-to-the-DC-voltage_{width}x.jpg?v=1711957647)
Feedback issues: Sometimes we receive feedback from customers that the underwater scooter still does not work after the battery is fully charged.
Solution: Please help to check the battery first.
How to check the battery:
Step 1: Prepare a multimeter and set it to the DC voltage.
![step1-Prepare-a-multimeter-and-set-it-to-the-DC-voltage](https://cdn.shopify.com/s/files/1/0062/3106/4647/files/step1-Prepare-a-multimeter-and-set-it-to-the-DC-voltage_1024x1024.jpg?v=1711957191)
Step 2: Then use the red and black probes to detect the voltage of the battery pack, and record the data of the multimeter. What is the data?
![step2-detect-the-voltage-of-the-battery](https://cdn.shopify.com/s/files/1/0062/3106/4647/files/step2-detect-the-voltage-of-the-battery_1024x1024.jpg?v=1711957195)
It is normally if the data is between 5 - 6 DC.
Step 3: Put one mini magnet beside the battery's positive pole.
![step3-put-one-mini-magnet-beside-the-positive-pole-of-the-battery](https://cdn.shopify.com/s/files/1/0062/3106/4647/files/step3-put-one-mini-magnet-beside-the-positive-pole-of-the-battery_1024x1024.jpg?v=1711957195)
Step 4: Detect the voltage of the battery pack again, and record the data of the multimeter. What is the data now?
23.46 DC means the battery is turned on.
![step4-detect-the-voltage-of-the-battery-again-record-the-data](https://cdn.shopify.com/s/files/1/0062/3106/4647/files/step4-detect-the-voltage-of-the-battery-again-record-the-data_1024x1024.jpg?v=1711957202)
Step 5: Keep the mini magnet on the battery, then use the charger to charge the battery, what is the LED light on the charger? Red or other?
Green light - there is an issue with the charger.
Red light - The charger is okay.
![step5-charge-the-battey-what-light-on-the-charger](https://cdn.shopify.com/s/files/1/0062/3106/4647/files/step5-charge-the-battey-what-light-on-the-charger_1024x1024.jpg?v=1711957202)
If the battery is ok, and there are issues with the main controller, please replace the main controller.
Here is the video to show you how to check the battery:
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