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  #1  
Old 10-22-2014, 12:22 AM
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Default JuiceBox Battery - Latest Lithium Iron Phosphate Prototype Load Test Analysis

Detailed Breakdown of Load Test Results.


Testing was done on AutoMeter SB-5DT. This meter uses 2 gauge OFC wire and copper alligator clips. This meter is rated not to exceed 500 Amps. All testing was done on the same day with small 2-3 minute pauses before runs to allow for ample cooling time. Tests were done from Largest, 500 Amps, to lowest, 200 Amps, and no charge was given between tests.


Load Tests (500AMP, 400AMP, 300AMP, 200AMP): All tests were preformed in order, no charging was done in between testing.

500 AMP BreakDown
Starting Voltage: 13.83v
@500 Amp Start Voltage: 12.21v
Duration: 10 Seconds (Machine Thermal Limit Reached)
@500 Amp End Voltage: 11.83v
@500 Amp Average Voltage: 12.02v

Stand Alone Power ( No Additional Power Source)
12.02v x 500 Amps = 6,010 Watts
Stand Alone Power x Common Amplifier Efficiency's
@90% = 5,409 Watts
@70% = 4,207 Watts
@50% = 3,005 Watts

Juicebox Lithium Iron Phosphate 40ah Battery - 500 amp load test - YouTube

400AMP Breakdown
Starting Voltage: 13.34v
@400 Amp Start Voltage: 12.31v
Duration: 17 Seconds
@400 Amp End Voltage: 12.03v
@400 Amp Average Voltage: 12.17v

Stand Alone Power ( No Additional Power Source)
12.17v x 400 Amps = 4,868 Watts
Stand Alone Power x Common Amplifier Efficiency's
@90% = 4,381 Watts
@70% = 3,408 Watts
@50% = 2,434 Watts

Juicebox 40ah Lithium Iron Phosphate - 400 amp load test - YouTube

300AMP Breakdown
Starting Voltage: 13.30v
@300 Amp Start Voltage: 12.52v
Duration: 17 Seconds
@300 Amp End Voltage: 12.23v
@300 Amp Average Voltage: 12.38v

Stand Alone Power ( No Additional Power Source)
12.38v x 300 Amps = 3,714 Watts
Stand Alone Power x Common Amplifier Efficiency's
@90% = 3,343 Watts
@70% = 2,600 Watts
@50% = 1,857 Watts

Juicebox 40AH Lithium Iron Phosphate Battery - 300 amp load test. - YouTube

200AMP Breakdown
Starting Voltage: 13.26v
@200 Amp Start Voltage: 12.72v
Duration: 22 Seconds
@200 Amp End Voltage: 12.48v
@200 Amp Average Voltage: 12.60v

Stand Alone Power ( No Additional Power Source)
12.60v x 200 Amps = 2,5020 Watts
Stand Alone Power x Common Amplifier Efficiency's
@90% = 2,268 Watts
@70% = 1,764 Watts
@50% = 1,260 Watts

Juicebox Battery Lithium Iron Phosphate 40 AH - 200 amp load test - YouTube
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Old 10-22-2014, 12:35 AM
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Very good write up sir
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Old 10-22-2014, 09:23 AM
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These really have incredible rebound. I look forward to more testing
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Old 10-22-2014, 04:39 PM
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**** something else i want and will get
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Old 11-04-2014, 04:44 PM
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Update?
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Old 11-08-2014, 08:07 PM
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Quote:
Originally Posted by BigBen View Post
These really have incredible rebound. I look forward to more testing
Voltage is not indication of SoC level with LiFePO4 batteries. 20-90% typically shares same measurable range.
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