User Tools

Site Tools


opinion:frater_secessus:run_this_load

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision
Previous revision
opinion:frater_secessus:run_this_load [2024/06/19 13:16]
frater_secessus [TL;DR]
opinion:frater_secessus:run_this_load [2025/02/10 13:15] (current)
frater_secessus [recharging afterward]
Line 1: Line 1:
 +[also see [[food:refrigeration:power|How do I run a 12v compressor refrigerator?]]]
 +
 ====== What will it take to run this load? ====== ====== What will it take to run this load? ======
  
Line 10: Line 12:
   - Watt-hours (Wh) ((or Amp-Hours)) (energy)   - Watt-hours (Wh) ((or Amp-Hours)) (energy)
   - any [[electrical:12v:power_mix|charging sources]] that are active at the time   - any [[electrical:12v:power_mix|charging sources]] that are active at the time
-  - recharging afterward+  - **recharging afterward**
  
 And a couple formulas we will use to convert units back and forth: And a couple formulas we will use to convert units back and forth:
Line 19: Line 21:
  
 [[opinion:frater_secessus:pareto|about these summaries]] [[opinion:frater_secessus:pareto|about these summaries]]
 +
 +
 +===== AC/DC =====
 +
 +Using the US as an example:
 +
 +  * wall outlets are 120v AC (alternating current).  In a van this kind of load will have to be run off [[electrical:shore_power|shore power]] or [[electrical:inverter|an inverter]].
 +  * most vehicles run on 12v DC (direct current).  Very small 12vdc loads (≤120w or 10A) can be run off the 12v outlet.  Larger loads will be run off [[electrical:12v:intro|an aux power setup]].
 +
  
  
Line 67: Line 78:
  
 ===== recharging afterward ===== ===== recharging afterward =====
 +
 +This is the part that people often forget (or prefer not to think about) in the planning stage.  Yes, your power station with a 1500w inverter can run that 1500w load for an hour, but **if you can't recharge it then it can do this trick only once**.   It's like paying rent:  being able to afford the first month's rent out of savings is one thing, but one needs income to keep paying the monthly rent to keep living there. 
  
 If you are recharging LiFePO4 the 173Wh used is basically what you'd need to recharge that battery to its former state of charge.  If you are recharging LiFePO4 the 173Wh used is basically what you'd need to recharge that battery to its former state of charge. 
opinion/frater_secessus/run_this_load.1718817370.txt.gz · Last modified: 2024/06/19 13:16 by frater_secessus