I have a rayovac rapid charger with 16 AA batteries and 6 AAA. I can connect it to any household outlet or in the car. I keep the charger in the car and at home. Cr123 (lithium batteries) are a problem because they cost buck and change each. I keep box of 20 at home and box of 20 in the car. I keep 16 pack of AAs and 8 pack of AAAs in the car and home. All my lithium battery chargers can be interchanged and will work of AC/DC current. Whenever I can I get battery adapters so I can use set of AAs instead of lithium I buy them. If necessary I can go to my dad storage room and have access to four Honda generators.
Also in survival situation all power gets to be conserved. GPS will not be on 24/7 but used only to establish position and get a bearing. I have radio channels assigned to my friends and we will communicate at specific times. I will also limit use of battery eating M6 to minimum and switch over to Inova X5 or a headlamp. Also if necessary batteries can be rewired AAA to accommodate AA and vice versa. The entire point again is conservation. I see people reading books for 4 hrs using flashlights. This is fine during camping trip but during survival is a no no.
Please do understand that a lot of the equipment that I listed is used as household items as well. I don’t have tv or good radio system or vcr or anything. So my portable dvd player and my radio work both as a household entertainment system and information source in case I need to keep up with the world. DVD player is not even on my list of items I grab when leaving the house. Same goes for camera gear. Even if it would fit I rather take 2 extra MRE meals. I don’t even bother with button batteries. I wrote off photon as a disposable item in survival situation. I keep spare batteries at home but if one gives out in critical situation it gets dropped.
I was thinking about getting a small solar power cell just in case.
Matt