Yep spare batteries are right up there with nail clippers and and emery board for things we do not need often at a session but when we do 
I have the Yamaha TRBX304 and the TRBX504. The 304 is active only but the 504 is both active and passive with a switch to select between them. The 504 also has upgraded electronics and pickups. Everything else is the same as the 304. 
I learned about the nail clippers the hard way, it was like I showed up with 2 picks on my right hand 
Yep, exactly.
Also, @kendra.phiri, there’s a massive difference in feel between a Yamaha 304 and a Fender P: Heavier/wider fretboard, chunkier neck, different body ergos, etc. A very different playability paradigm shift.
If you really like your 304’s sound, get a 504. It has a lot of upgrade features, including an active/passive switch so you won’t be completely dependent on a battery ever again.
Also, you’re not required to turn tone or EQ knobs if you don’t want to. They’re just there if you want/need to shape your tone.
I don’t think you can go wrong with MIA fender pro ii the 63 neck is amazing with rolled edges rose wood. this is my second fender. My first The Elite active is way more than I need batteries are a hassle they go dead when left plugged in to amp. Beside that its an awesome Bass I will never part with either one but American pro ii is all I need for my playing needs 63 necks are a gold standard.
You should always unplug your cable from the bass when you’re done playing. Batteries last a very long time that way.
Knowing it and doing it are two different things
True, but it’s more likely not done if it’s not known.
I know it but my Bass is usually plugged in because I practice so much sometimes 7 hrs. a day. every day at least 3.5 its around my neck now. if I take lunch I might not unplug it though, love retirement! and you guys.
The batteries in my sire have lasted over a year and a half so far and I changed the battery in my GWB35 bass a year after I bought it because I had no idea how long it was in there 
My Yamaha silent guitar eats 9V batteries like Cookie Monster eats cookies 
I agree about Sires. My M5 still has the two factory 9-volt batteries in it, going strong.
Same with my Mayones, with its factory battery.
I rarely run either of them passive so the batteries are always in service.
The battery in my TRBX604 lasted more than two years; It could still be going for all I know, I sold it with it.
this is a lie 
they sneak up on you though
All the bases
I thought so too, til I owned 2 
EXCITING NEWS FOLKS! The store had just got in the 4 string version of the Ibanez I really liked. I’m currently playing the heck out of this sexy wood-grained beast. LOVE IT SO MUCH!!
Pics or it didn’t happen 
Right? I mean, come on! I dunno about anyone else here, but I’m a bass nerd. When i hear about a new bass, my fingers get itchy. I think he’s keeping us in suspense because he’s enjoying watching us sweat.
I think he’s probably too busy playing that sweet new bass to be taking any pictures 