Anyone seen a Slimmer version of the battery for CrystalSky or Cendence?

DJI's battery for CrystalSky and Cendence (WB37**) is bulky (thick and heavy).   Over-kill when it comes to runtime hours for either product.  Given Mavic Pro P has a maximum flight time of 30-minutes.  A battery lasting half as long would still provide 2 to 2.5 hours of runtime for CrystalSky 7.85".

**WB37 offers four to five hours of operating time for a 7.85"  CrystalSky monitor, five to six hours for a 5.5" CrystalSky monitor, and  four hours for a Cendence remote controller.

Thanks for your attention. Crystal sky does not have slimmer battery, but your advice will be forwarded.