Hi I intend to purchase extra batteries for spark, going through online several sellers but I realized there are indicating difference SKU. Are they all useable and can be used by later upgrading the battery firmware via DJI Go 4 app and/or DJI Assistant 2?

Example of SKU difference are DJ756ELAAXYYMEANMY-73637456 and DJ756ELABCMBUCANMY-105402824
Appreciate some advise and clarification. Thank you.

Hi, sir. Here is the link of the battery: https://store.dji.com/product/spark-intelligent-flight-battery. Please note that spark has only one kind of battery. Please install the battery on spark and upgrade them if the app suggest you to do that. You can also upgrade it trought DJI Assistant 2.