Theoretical battery power supply question


I’m toying with the idea of taking my audio system (minus the power amp) off the grid and using a lithium battery to power my streamer, DDC, DAC, and preamp.  I checked and all components together require 83 Watts of power and the battery I’m considering can supposedly handle up to 300W power consumption with 600W peak capability.  Seems like this should work and might offer some significant sonic benefits on the relative cheap, but can anyone here with more knowledge of electronics and battery power enlighten me on why this would or would not work or being worthwhile trying?  Obviously my biggest concern is I don’t want to damage any of my components over this, so I’d certainly be interested in any risks I might be open to here.  This is the battery I’m considering, and thanks for any thoughts, info, and expertise. 

https://www.amazon.com/ALLWEI-Portable-Generator-78000mAh-Emergency/dp/B08CXN4TZR/ref=sxbs_pa_sp_search_thematic_btf_sspa?content-id=amzn1.sym.695e268e-ec60-465b-99cc-6a0ed7b3b9f7%3Aamzn1.sym.695e268e-ec60-465b-99cc-6a0ed7b3b9f7&cv_ct_cx=lifepo4%2Bbackup%2Bbattery&gclid=EAIaIQobChMI5Pnfw53--QIV_smUCR0sNQoNEAAYASAAEgK42_D_BwE&hvadid=599684279414&hvdev=c&hvlocphy=9067609&hvnetw=g&hvqmt=e&hvrand=500842445123982892&hvtargid=kwd-1200939481082&hydadcr=12987_10870525&keywords=lifepo4%2Bbackup%2Bbattery&pd_rd_i=B08CXN4TZR&pd_rd_r=8a4f7e3b-6dec-40b8-a992-016ff5daaa97&pd_rd_w=N8yvV&pd_rd_wg=M5BKT&pf_rd_p=695e268e-ec60-465b-99cc-6a0ed7b3b9f7&pf_rd_r=8GADP5VP37YJZNTVVA3B&qid=1662400851&sr=1-2-dee36d41-3265-4e30-99c6-4e7343298906-spons&ufe=app_do%3Aamzn1.fos.f5122f16-c3e8-4386-bf32-63e904010ad0&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUExWVkzOFRUMjhONllBJmVuY3J5cHRlZElkPUEwODUzODgzSlBKUVE3SkJSSlc0JmVuY3J5cHRlZEFkSWQ9QTA5NDI1MjkySlMwM1NaM1BYR01CJndpZGdldE5hbWU9c3Bfc2VhcmNoX3RoZW1hdGljX2J0ZiZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU&th=1

soix

Showing 2 responses by rhg3

@soix Nothing ventured, nothing gained. I think it's definitely worth a shot. If it doesn't provide any improvement, then you can always return it. Not sure how silent the "silent fan" is. If you decide to keep it, I'd avoid keeping it plugged in 24x7. Charging batteries to 100% diminishes their lifespan.

The unit is rated for 280WH (Watt Hours), which means it can power 1 Watt for 280hrs.

83 Watts for 3.37 hrs (280/83)  assuming 100% efficiency.  However, the FAQ on your URL seems to indicate 85% efficiency in their example. In which case: 238/83 = 2.86hrs. 

  • Q2: How to calculate the working times for your device?
  • A: Working time = 280Wh*0.85 / operate power of your device. For reference, assuming power consumption of your device is 30W, working time will be 280Wh*0.85 /30W = 7.93 hrs (rough calculated).