Blue Ocean Megaphone Replacement Battery

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Blue Ocean Megaphone accessories are no longer available on this website, but you can find the full line of Blue Ocean Audio Equipment at

Replacement/Spare battery pack for Cox Box & Megaphone

How to store your battery for long periods unused:

Our typical recommendation with these batteries is to store them with between 40-60% charge, leaving them off the charger and in a temperate climate.      40-60% are guidelines and it’s a little hard to tell with the Blue Ocean, but basically, you leave it on the charger until it gets to flashing green light, let it go for a little while longer and then take off.  

*Fully charged or fully discharged or leaving it on the charger are things to try and avoid.

Domestic Shipping

FREE SHIPPING & RETURNS (on Meters) on orders over $50 in the USA. (USPS)

Free Return policy: Domestic meters can be ordered risk free for 30 days.  

If you would like to return it, simply email us and we'll email you a return label.  You will be responsible for packing, taping, and getting it to UPS or US mail service.  The meter must contain the original box and all that comes with it or there will be a restocking fee of up to 15%.  

We ship via USPS or UPS shipping. You may choose at checkout. 

International Shipping

Shipping outside the USA will have these options with prices at checkout:

  • First Class Mail for $10 on orders under $50 (intended for battery kits & screen protectors)
  • Priority Mail International:  $29 FLAT RATE (Limited Online Tracking)
  • USPS Express Mail: $49 FLAT RATE (Global Online Tracking)
  • UPS Expedited: 2-5 Business Days - Delivery by end of day
  • UPS Express: 1-3 Business Days - Delivery by end of day
  • UPS Saver: 1-3 Business Days - Delivery by end of day