MacBook Repair Seattle is more than happy to test our customer's MagSafe chargers, and their laptops to see if their battery may be bad. We carry all MagSafe chargers in stock, and USB-c chargers too. If your MacBook works there is a utility under power in the About This Mac that states battery condition. If you think your MacBook's battery is failing, check it's status there first. Call us or stop by if you need help with your charging problems.