timselectric
If I can do it, you can do it.
- Joined
- Feb 5, 2022
- Messages
- 18,931
Hook it up fast.
Or use one of the options above to pre charge the capacitors.
Or use one of the options above to pre charge the capacitors.
A pencil
Easy, no-cost solution:
Close your eyes when touching the cable lug to the battery post. Hold it there.
Open your eyes again to finish attaching the cable.
I've done this for years and it always, always works. ;-)
I used these with my lifepo4 bank.They are lead Acid batteries
Add one of these so you don't have to keep disconnecting and reconnecting the terminal to power off /on. Then you can jump the switch with the resistor (add a pigtail to one end of the resistor) before turning back on.Even with the inverter not plugged in it makes sparks
any problem using a circuit tester? seems to work fine and you get the bonus of watching the light dim as the cap charges...never see it mentioned.Pretty much any resistor will work.
A pencil has a fairly low resistance, so spark reduction isn’t as good as with a 8 to 15ohm 100W resistor, or a light bulb for that matter…
Should be fine.any problem using a circuit tester? seems to work fine and you get the bonus of watching the light dim as the cap charges...never see it mentioned.
Yes.what about lithium batteries, they spark too and this ressistor solve that problem too?
That battery chemistry isn't what's causing the spark its what they are being connected to. A lead acid battery, lithium, etc all spark if you connect them to something that has a large draw to it. No load/draw no spark. Load/draw = spark.what about lithium batteries, they spark too and this ressistor solve that problem too?
Exactly.And the 25 watts and 30 ohm of this resistor can be use by any size inverter? 6000 watts, 10.000 watts?
I just use a contractors pencil. Its always around, easy to buy another one if I run out of them or lose them and cheap.What about 20 watts and 30 ohms, or 25 w and 47 ohm
If you don't disconnect the battery and the inverter, never. The capacitors stay charged if the inverter and battery are connected, regardless of whether the inverter is on or off.When you charge up the capacitors, and then turn the inverter off, when do you have to do it again?
When you charge up the capacitors, and then turn the inverter off, when do you have to do it again?
The next time you connect the battery to it.When you charge up the capacitors, and then turn the inverter off, when do you have to do it again?
That ones impossible to give a blanket answer for since every inverter is going to discharge at a different rate. But I usually consider 5 minutes or so about the max I go without using a pencil to make sure its charged up for reconnecting. I forget how long its been if its longer than thatWhen you charge up the capacitors, and then turn the inverter off, when do you have to do it again?
Either is fine.What about 20 watts and 30 ohms, or 25 w and 47 ohm