Is this a bad battery?

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Hulka

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Arrma RC's
  1. Kraton 6s
Just picked up to new 6S batteries. The top one I just noticed does not show any amps. Bad battery I assume? It is a power hobby battery.

7CC6EE77-0648-412D-A479-E647DAB0757F.jpeg
 
Just picked up to new 6S batteries. The top one I just noticed does not show any amps. Bad battery I assume? It is a power hobby battery.
Amps are what a battery is drawing from the charger. You will see the voltage is higher on the top pack, meaning it came with a higher charge than the lower one. None of that means much at all. Check the individual cell voltages. That will mean much more.
 
The balancing part around fully charged voltage will charge and cycle amps around at lower charge rate. That last little bit before fully charged voltage (4.2v per cell) can take awhile balancing out the pack.
 
Amps are what a battery is drawing from the charger. You will see the voltage is higher on the top pack, meaning it came with a higher charge than the lower one. None of that means much at all. Check the individual cell voltages. That will mean much more.
I also don't know if it necessarily came with a higher storage charge. The top one has been charging for an hour and a half while the lower one had only been charging for a half hour. I'm guessing that this is a 50 or 75 watt per channel charger with it taking so long to charge.

As @Cheapbastard & @Mr.Duke said, the amperage will drop way down as it gets closer to completion and it looks completely normal.
 
I also don't know if it necessarily came with a higher storage charge. The top one has been charging for an hour and a half while the lower one had only been charging for a half hour. I'm guessing that this is a 50 or 75 watt per channel charger with it taking so long to charge.

As @Cheapbastard & @Mr.Duke said, the amperage will drop way down as it gets closer to completion and it looks completely normal.
Good eye and valid points! I didn’t even look at the time on the charges.

It appears to be a 150W total output on AC. That would give you about 75W per channel, and when charging at 25VDC, that’s a max of 3A. While I don’t know his batteries mAH rating, assuming it’s 5000mAH, that’s gonna be a loooooong charge. 3000mA/H would take almost 2 hours to charge a 5000mAH pack from empty. Forget anything larger than 5000mAH ??
 
Good eye and valid points! I didn’t even look at the time on the charges.

It appears to be a 150W total output on AC. That would give you about 75W per channel, and when charging at 25VDC, that’s a max of 3A. While I don’t know his batteries mAH rating, assuming it’s 5000mAH, that’s gonna be a loooooong charge. 3000mA/H would take almost 2 hours to charge a 5000mAH pack from empty. Forget anything larger than 5000mAH ??
Yep, with a 5000mah 6S pack, you would need minimum 5A and 111W per channel to charge at 1C. Even if it's capable of 10A, it will hit the wattage ceiling which appears to be 75W, so your not going to get much over 3A out of it. You need a pretty healthy charger to deal with 6S. 10A/150W per channel for packs under 7000mah to be able to at least charge at 1C.

I have an ongoing chart that I add capacity/cell count to to see what things need. Getting kind of lengthy. lol!

CellsCell max VCapacity MAHAmps for 1CWatts To Charge @1CAmps for 2CWatts To Charge @2CAmps for 3CWatts To Charge @3CAmps
@100W
Amps
@150W
Amps
@200W
Cell max VWatts To Charge @1CWatts To Charge @2CWatts To Charge @3CAmps
@100W
Amps
@150W
Amps
@200W
13.7100013.727.4311.127.0340.5454.054.24.28.412.623.8135.7147.62
23.7500053710741511113.5120.2727.034.2428412611.9017.8623.81
23.772007.253.2814.4106.5621.6159.8413.5120.2727.034.260.48120.96181.4411.9017.8623.81
23.774007.454.7614.8109.5222.2164.2813.5120.2727.034.262.16124.32186.4811.9017.8623.81
23.776007.656.2415.2112.4822.8168.7213.5120.2727.034.263.84127.68191.5211.9017.8623.81
23.79000966.618133.227199.813.5120.2727.034.275.6151.2226.811.9017.8623.81
23.7100001074201483022213.5120.2727.034.28416825211.9017.8623.81
23.71400014103.628207.242310.813.5120.2727.034.2117.6235.2352.811.9017.8623.81
33.75000555.51011115166.59.0113.5118.024.2631261897.9411.9015.87
33.762006.268.8212.4137.6418.6206.469.0113.5118.024.278.12156.24234.367.9411.9015.87
33.77000777.714155.421233.19.0113.5118.024.288.2176.4264.67.9411.9015.87
33.772007.279.9214.4159.8421.6239.769.0113.5118.024.290.72181.44272.167.9411.9015.87
33.774007.482.1414.8164.2822.2246.429.0113.5118.024.293.24186.48279.727.9411.9015.87
33.776007.684.3615.2168.7222.8253.089.0113.5118.024.295.76191.52287.287.9411.9015.87
33.79000999.918199.827299.79.0113.5118.024.2113.4226.8340.27.9411.9015.87
33.7100001011120222303339.0113.5118.024.21262523787.9411.9015.87
43.7500057410148152226.7610.1413.514.2841682525.958.9311.90
43.756005.682.8811.2165.7616.8248.646.7610.1413.514.294.08188.16282.245.958.9311.90
43.765006.596.213192.419.5288.66.7610.1413.514.2109.2218.4327.65.958.9311.90
43.770007103.614207.221310.86.7610.1413.514.2117.6235.2352.85.958.9311.90
43.790009133.218266.427399.66.7610.1413.514.2151.2302.4453.65.958.9311.90
53.71000118.5237355.55.418.1110.814.22142634.767.149.52
63.74000488.88177.612266.44.506.769.014.2100.8201.6302.43.975.957.94
63.745004.599.99199.813.5299.74.506.769.014.2113.4226.8340.23.975.957.94
63.75000511110222153334.506.769.014.21262523783.975.957.94
63.752005.2115.4410.4230.8815.6346.324.506.769.014.2131.04262.08393.123.975.957.94
63.754005.4119.8810.8239.7616.2359.644.506.769.014.2136.08272.16408.243.975.957.94
63.772007.2159.8414.4319.6821.6479.524.506.769.014.2181.44362.88544.323.975.957.94
63.774007.4164.2814.8328.5622.2492.844.506.769.014.2186.48372.96559.443.975.957.94
83.75000514810296154443.385.076.764.21683365042.984.465.95
 
Yep, with a 5000mah 6S pack, you would need minimum 5A and 111W per channel to charge at 1C. Even if it's capable of 10A, it will hit the wattage ceiling which appears to be 75W, so your not going to get much over 3A out of it. You need a pretty healthy charger to deal with 6S. 10A/150W per channel for packs under 7000mah to be able to at least charge at 1C.

I have an ongoing chart that I add capacity/cell count to to see what things need. Getting kind of lengthy. lol!

CellsCell max VCapacity MAHAmps for 1CWatts To Charge @1CAmps for 2CWatts To Charge @2CAmps for 3CWatts To Charge @3CAmps
@100W
Amps
@150W
Amps
@200W
Cell max VWatts To Charge @1CWatts To Charge @2CWatts To Charge @3CAmps
@100W
Amps
@150W
Amps
@200W
13.7100013.727.4311.127.0340.5454.054.24.28.412.623.8135.7147.62
23.7500053710741511113.5120.2727.034.2428412611.9017.8623.81
23.772007.253.2814.4106.5621.6159.8413.5120.2727.034.260.48120.96181.4411.9017.8623.81
23.774007.454.7614.8109.5222.2164.2813.5120.2727.034.262.16124.32186.4811.9017.8623.81
23.776007.656.2415.2112.4822.8168.7213.5120.2727.034.263.84127.68191.5211.9017.8623.81
23.79000966.618133.227199.813.5120.2727.034.275.6151.2226.811.9017.8623.81
23.7100001074201483022213.5120.2727.034.28416825211.9017.8623.81
23.71400014103.628207.242310.813.5120.2727.034.2117.6235.2352.811.9017.8623.81
33.75000555.51011115166.59.0113.5118.024.2631261897.9411.9015.87
33.762006.268.8212.4137.6418.6206.469.0113.5118.024.278.12156.24234.367.9411.9015.87
33.77000777.714155.421233.19.0113.5118.024.288.2176.4264.67.9411.9015.87
33.772007.279.9214.4159.8421.6239.769.0113.5118.024.290.72181.44272.167.9411.9015.87
33.774007.482.1414.8164.2822.2246.429.0113.5118.024.293.24186.48279.727.9411.9015.87
33.776007.684.3615.2168.7222.8253.089.0113.5118.024.295.76191.52287.287.9411.9015.87
33.79000999.918199.827299.79.0113.5118.024.2113.4226.8340.27.9411.9015.87
33.7100001011120222303339.0113.5118.024.21262523787.9411.9015.87
43.7500057410148152226.7610.1413.514.2841682525.958.9311.90
43.756005.682.8811.2165.7616.8248.646.7610.1413.514.294.08188.16282.245.958.9311.90
43.765006.596.213192.419.5288.66.7610.1413.514.2109.2218.4327.65.958.9311.90
43.770007103.614207.221310.86.7610.1413.514.2117.6235.2352.85.958.9311.90
43.790009133.218266.427399.66.7610.1413.514.2151.2302.4453.65.958.9311.90
53.71000118.5237355.55.418.1110.814.22142634.767.149.52
63.74000488.88177.612266.44.506.769.014.2100.8201.6302.43.975.957.94
63.745004.599.99199.813.5299.74.506.769.014.2113.4226.8340.23.975.957.94
63.75000511110222153334.506.769.014.21262523783.975.957.94
63.752005.2115.4410.4230.8815.6346.324.506.769.014.2131.04262.08393.123.975.957.94
63.754005.4119.8810.8239.7616.2359.644.506.769.014.2136.08272.16408.243.975.957.94
63.772007.2159.8414.4319.6821.6479.524.506.769.014.2181.44362.88544.323.975.957.94
63.774007.4164.2814.8328.5622.2492.844.506.769.014.2186.48372.96559.443.975.957.94
83.75000514810296154443.385.076.764.21683365042.984.465.95
That’s so helpful I bookmarked it ??
 
Yep, with a 5000mah 6S pack, you would need minimum 5A and 111W per channel to charge at 1C. Even if it's capable of 10A, it will hit the wattage ceiling which appears to be 75W, so your not going to get much over 3A out of it. You need a pretty healthy charger to deal with 6S. 10A/150W per channel for packs under 7000mah to be able to at least charge at 1C.

I have an ongoing chart that I add capacity/cell count to to see what things need. Getting kind of lengthy. lol!

CellsCell max VCapacity MAHAmps for 1CWatts To Charge @1CAmps for 2CWatts To Charge @2CAmps for 3CWatts To Charge @3CAmps
@100W
Amps
@150W
Amps
@200W
Cell max VWatts To Charge @1CWatts To Charge @2CWatts To Charge @3CAmps
@100W
Amps
@150W
Amps
@200W
13.7100013.727.4311.127.0340.5454.054.24.28.412.623.8135.7147.62
23.7500053710741511113.5120.2727.034.2428412611.9017.8623.81
23.772007.253.2814.4106.5621.6159.8413.5120.2727.034.260.48120.96181.4411.9017.8623.81
23.774007.454.7614.8109.5222.2164.2813.5120.2727.034.262.16124.32186.4811.9017.8623.81
23.776007.656.2415.2112.4822.8168.7213.5120.2727.034.263.84127.68191.5211.9017.8623.81
23.79000966.618133.227199.813.5120.2727.034.275.6151.2226.811.9017.8623.81
23.7100001074201483022213.5120.2727.034.28416825211.9017.8623.81
23.71400014103.628207.242310.813.5120.2727.034.2117.6235.2352.811.9017.8623.81
33.75000555.51011115166.59.0113.5118.024.2631261897.9411.9015.87
33.762006.268.8212.4137.6418.6206.469.0113.5118.024.278.12156.24234.367.9411.9015.87
33.77000777.714155.421233.19.0113.5118.024.288.2176.4264.67.9411.9015.87
33.772007.279.9214.4159.8421.6239.769.0113.5118.024.290.72181.44272.167.9411.9015.87
33.774007.482.1414.8164.2822.2246.429.0113.5118.024.293.24186.48279.727.9411.9015.87
33.776007.684.3615.2168.7222.8253.089.0113.5118.024.295.76191.52287.287.9411.9015.87
33.79000999.918199.827299.79.0113.5118.024.2113.4226.8340.27.9411.9015.87
33.7100001011120222303339.0113.5118.024.21262523787.9411.9015.87
43.7500057410148152226.7610.1413.514.2841682525.958.9311.90
43.756005.682.8811.2165.7616.8248.646.7610.1413.514.294.08188.16282.245.958.9311.90
43.765006.596.213192.419.5288.66.7610.1413.514.2109.2218.4327.65.958.9311.90
43.770007103.614207.221310.86.7610.1413.514.2117.6235.2352.85.958.9311.90
43.790009133.218266.427399.66.7610.1413.514.2151.2302.4453.65.958.9311.90
53.71000118.5237355.55.418.1110.814.22142634.767.149.52
63.74000488.88177.612266.44.506.769.014.2100.8201.6302.43.975.957.94
63.745004.599.99199.813.5299.74.506.769.014.2113.4226.8340.23.975.957.94
63.75000511110222153334.506.769.014.21262523783.975.957.94
63.752005.2115.4410.4230.8815.6346.324.506.769.014.2131.04262.08393.123.975.957.94
63.754005.4119.8810.8239.7616.2359.644.506.769.014.2136.08272.16408.243.975.957.94
63.772007.2159.8414.4319.6821.6479.524.506.769.014.2181.44362.88544.323.975.957.94
63.774007.4164.2814.8328.5622.2492.844.506.769.014.2186.48372.96559.443.975.957.94
83.75000514810296154443.385.076.764.21683365042.984.465.95
I know I mentioned this in another thread but should the cell voltage not be 4.2v? All of the other calculators use 4.2v per cell that I have seen. Also you have to take in account the inefficiency of the psu in the charger which at best is 80%.
 
I know I mentioned this in another thread but should the cell voltage not be 4.2v? All of the other calculators use 4.2v per cell that I have seen.
I normally use 4.0 per cell. When the battery is close to 4.2v per cell the charging is slowed way down, so you aren't pulling full power. At 4.0-4.1v per cell the charger is normally still charging at full power. 4.2v per cell does give you a little more of a buffer when figuring out your needs though.

Also, if you scroll to the right there is the 4.2v section.
 
I normally use 4.0 per cell. When the battery is close to 4.2v per cell the charging is slowed way down, so you aren't pulling full power. At 4.0-4.1v per cell the charger is normally still charging at full power. 4.2v per cell does give you a little more of a buffer when figuring out your needs though.

Also, if you scroll to the right there is the 4.2v section.
Oh I missed that, sorry on my phone and it is being kind of dumb today.

Disregard my last post.
 
I know I mentioned this in another thread but should the cell voltage not be 4.2v? All of the other calculators use 4.2v per cell that I have seen. Also you have to take in account the inefficiency of the psu in the charger which at best is 80%.
I have 4.2 and 3.7 in my chart.

I know my chargers all drop current significantly around 4V, so I could probably augment my chart by setting it to 3.9V per cell to get a better idea.
 
I have 4.2 and 3.7 in my chart.

I know my chargers all drop current significantly around 4V, so I could probably augment my chart by setting it to 3.9V per cell to get a better idea.

I think that @chevys10zr2003 might be right, that they just use 4.2v as a sort of safety buffer.
 
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