I agree. I personally don’t like active basses, I’d rather just let the amp and whatever effects pedals I have do their job. Unfortunately, this bass is active and I just have to live with it.
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If you love your bass basic after this is over you could change pickup’s PUP’s to passive, or … but that’s a whole other rabbit hole 
Pam
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If it has passive pickups (which it probably does) then you could install an active/passive switch.
Active preamp is not the same as active pickups. Both of my basses have active EQ but passive pickups, it’s common.
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I have the same bass @PamPurrs has and it does indeed have passive pickups. Once things settle down a bit I’m planning on taking it to my guitar guru and asking him to add a passive bypass switch. Probably a push/pull volume switch.
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@howard and @joeike Thanks for posting about this. I’ve been wondering this very thing and how hard it would be to add an active/passive switch. Questions answered before I even asked. Nice. 
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Let us know how that goes and how much it costs. Since you and I have the same bass, that’ll give me a benchmark.
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I will.
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should not be crazy expensive. on an electronic point of view, it’s extremely simple.
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That’s my hope! 
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I took it to my guitar guy and it turns out this bass does not have passive pickups. Sigh
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Bummer!
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Mine drained even though i left the switch on passive,but with the lead plugged in. Now i remove the lead each time but like others have said am worried that it will loosen or damage the jack connection over time.
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@Vik loctite blue is your friend. A tiny drop of that and your problem is solved. The blue is removable; don’t use the red version as it’s permanent (ask me how I know!).
You can normally use a small 10mm socket head to tighten the nut.
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I second that remark. Use the BLUE loctite.
On the other hand if you don’t have loctite, a drop (a DROP, no more!) of white glue will work as well.
OTOH, there ain’t no loctite like a cross-thread 
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So… How do you know? 
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My battery drained when switched to passive, but as i had left the cable plugged in i am advised that this was the cause. Now i swich to passive and unplug the cable after use!
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My TRBX 504 is always in the passive mode but thanks for the reminder about the low battery indicator LED, I had forgotten all about it.
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I have to change the battery on my sub4 quite often IMO
since I got it in Feb I’ve tossed 3, I always unplug from the amp when not in use 
But I use it almost everyday also
The bass plays without battery, just not as loud (significantly less) so I got a small box of batteries
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Just to be sure: you need to unplug the cable from the bass. The on/off switch is in the output jack on the bass itself. Unplugging the cable from the amp doesn’t do anything if you leave it plugged in on the bass side.
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If someone came up with a good tuner pedal that I could leave my cord plugged into without draining the battery I would buy it today.
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