Q: Does this YAESU VERTEX 1800 MAH LI-ION BATTERY FTA 550L AND 750L come with a charger?
No, this is the battery only. The charger is included with new FTA 550L and 750L radios. If you need to replace your charger, they are available under part numbers 11-12835 (110 VAC) and 11-12836 (220 VAC). There is also a cradle dock available under part number 11-12833.
Q: Scenario: I'm using my hand held Yaesu 550 with this battery pack. The battery pack indicates that it is low and is in need of re-charging.
Question: Will the battery start to re-charge if I plug the radio's included 12-volt chord into the radio and the ships power, or do I have to use the 110V wall charger to replenish?
The battery can be charged by either the 12V or 110V cord.
Q: have a 550AA radio. Can I install this battery on my radio and convert it to the 550L?
Yes, adding the li-ion battery # 11-12832 will make the 550AA into a 550L.
Q: Can this Li-Ion battery be charged with the power adapters included with the 550AA version or is the cradle necessary?
Yes, you can use the power adapter included with your 550.