JBL Flip 4, GSP872693 01, Speaker battery

Outline	Model	Type	Capacity	Price	Order
	CS-JMF310SL	Li-Poly	3000mAh 3.7v	$41.00Cdn ($32.80US)	Quantity:

Installation instructions can be viewed here.

The above batteries will have different model numbers on the product pages since they are after market replacement batteries which are as good or better than the originals.  The current or mAh (milliamp hour) rating of a battery is an indication of the battery capacity or how long it will last on a charge, the higher the better.
There is a $12 Cdn ($9.60US) shipping and handling charge.
1 year warranty & no questions asked 1 month return policy.