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Lit power brick
May 23, 2020 09:24:42   #
ejones0310 Loc: Tulsa, OK
 
I keep seeing ads on the forum for a power brick called Lit. It’s $99 and claims 20 amps of power availability. Does anyone have any actual experience with it?

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May 23, 2020 09:55:53   #
Longshadow Loc: Audubon, PA, United States
 
20,000mah? (20Ah??)
such a little package!
Capable of four phone charges?
I have a PocketJuice that puts out 10,000mah
(Rated at 5v at 2 amps, (3.4 amps max)
Not sure how they (anyone) get the mah rating figures......
Love to see their power curve(s) for the device.

My pack does 4 phone charges from phone empty.

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May 23, 2020 10:21:44   #
ejones0310 Loc: Tulsa, OK
 
Longshadow wrote:
20,000mah? (20Ah??)
such a little package!
Capable of four phone charges?
I have a PocketJuice that puts out 10,000mah
(Rated at 5v at 2 amps, (3.4 amps max)
Not sure how they (anyone) get the mah rating figures......
Love to see their power curve(s) for the device.

My pack does 4 phone charges from phone empty.


The advertising folks always seem to get a little free with their numbers. 10 amp and 20 amp seems a bit much for the size. But, these new Lithium Ion batteries are getting better by the day. Did you catch the part where they charge it from the sun? I’m thinking it would take days to change it up with that little panel.

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May 23, 2020 10:26:02   #
Longshadow Loc: Audubon, PA, United States
 
20 amps is a LOT of current, but one also has to look at what voltage supplies it.
Power from 20 amps at 5 volts (10 Watts) is a LOT less than power from 20 amps at 120 volts (2,400 Watts).

Don't know how they purport to get 20 amps out of it.

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May 23, 2020 10:38:14   #
Longshadow Loc: Audubon, PA, United States
 
ejones0310 wrote:
The advertising folks always seem to get a little free with their numbers. 10 amp and 20 amp seems a bit much for the size. But, these new Lithium Ion batteries are getting better by the day. Did you catch the part where they charge it from the sun? I’m thinking it would take days to change it up with that little panel.


Marketers get free with a lot of stuff.
Their job is to SELL IT!

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May 23, 2020 10:39:48   #
ejones0310 Loc: Tulsa, OK
 
Longshadow wrote:
Marketers get free with a lot of stuff.
Their job is to SELL IT!


Caveat emptor

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May 23, 2020 10:46:38   #
LarryFB Loc: Depends where our RV is parked
 
Longshadow wrote:
20 amps is a LOT of current, but one also has to look at what voltage supplies it.
Power from 20 amps at 5 volts (10 Watts) is a LOT less than power from 20 amps at 120 volts (2,400 Watts).

Don't know how they purport to get 20 amps out of it.


20 amps at 5 volts is 100 watts, you just forget to add the second zero.

I recently purchased a battery powered jump starter. It's rated at 22000 ma-hours and has a Lithum-ion battery. I wondered if it would have the current to jump start my RV with a V-10. It certainly does, I've used it twice and it started perfectly.

It's amazing what technology has been able to do!

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May 23, 2020 11:08:19   #
Longshadow Loc: Audubon, PA, United States
 
LarryFB wrote:
20 amps at 5 volts is 100 watts, you just forget to add the second zero.

I recently purchased a battery powered jump starter. It's rated at 22000 ma-hours and has a Lithum-ion battery. I wondered if it would have the current to jump start my RV with a V-10. It certainly does, I've used it twice and it started perfectly.

It's amazing what technology has been able to do!


Oops, I mean Ops, no, wait...

Amazing these new batteries.

Starter motor works on 22 amps? WOW!
That's a big improvement over the years also.
(You did disconnect the RV battery to do the test to simulate a dead battery, correct?)

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May 23, 2020 12:02:59   #
LarryFB Loc: Depends where our RV is parked
 
Longshadow wrote:
Oops, I mean Ops, no, wait...

Amazing these new batteries.

Starter motor works on 22 amps? WOW!
That's a big improvement over the years also.
(You did disconnect the RV battery to do the test to simulate a dead battery, correct?)


No I did not disconnect the RV battery. BUT, before I connected the jumper, I tried to start the vehicle. Turning the ignition on, no dash lights were lit, there was no enough voltage for anything to turn on. I didn't even bother to check the voltage on the battery. But I hooked up the charger (very compact and relatively light) the engine cranked right away abd the engine started within about 2 seconds! That was impressive.

I doubt the started motor was just pulling 22 amps, that's low for a starter. The figure of 22000 amp-hours should be the capacity of the battery for putting out 22 amps for 1 hour, or 44 amps for 30 minutes, or 1 amp for 22 hours. It does not mean it is limited to 22 amps.

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May 23, 2020 12:10:42   #
Longshadow Loc: Audubon, PA, United States
 
LarryFB wrote:
No I did not disconnect the RV battery. BUT, before I connected the jumper, I tried to start the vehicle. Turning the ignition on, no dash lights were lit, there was no enough voltage for anything to turn on. I didn't even bother to check the voltage on the battery. But I hooked up the charger (very compact and relatively light) the engine cranked right away abd the engine started within about 2 seconds! That was impressive.

I doubt the started motor was just pulling 22 amps, that's low for a starter. The figure of 22000 amp-hours should be the capacity of the battery for putting out 22 amps for 1 hour, or 44 amps for 30 minutes, or 1 amp for 22 hours. It does not mean it is limited to 22 amps.
No I did not disconnect the RV battery. BUT, befor... (show quote)


You mean 22000 MilliAmp-hours?
A starter motor under full load typically draws over 200 amps.
I doubt it can supply 220 amps for six seconds though.

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May 23, 2020 12:45:59   #
LarryFB Loc: Depends where our RV is parked
 
Longshadow wrote:
You mean 22000 MilliAmp-hours?
A starter motor under full load typically draws over 200 amps.
I doubt it can supply 220 amps for six seconds though.


22000 milliamp-hours is the same as 22 amp-hours!

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May 23, 2020 13:46:11   #
Longshadow Loc: Audubon, PA, United States
 
LarryFB wrote:
...
...
I doubt the started motor was just pulling 22 amps, that's low for a starter. The figure of 22000 amp-hours should be the capacity of the battery for putting out 22 amps for 1 hour, or 44 amps for 30 minutes, or 1 amp for 22 hours. It does not mean it is limited to 22 amps.


Sorry, I misunderstood your statement above (my bold emphasis).

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May 23, 2020 14:28:57   #
LarryFB Loc: Depends where our RV is parked
 
Longshadow wrote:
Sorry, I misunderstood your statement above (my bold emphasis).


No problem, I forgot the milli in front of amps! My bad!

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