โOct-23-2016 10:08 AM
โOct-27-2016 04:47 AM
โOct-26-2016 11:55 PM
RLS7201 wrote:I confirm all of this for Dell laptops. That signal wire has a habit of breaking from flexing at the DC plug, resulting in the message that the laptop will run, but the battery will not charge.
Look closely, at the DC connector, there is a outer shell and inner shell that carries the power to the LT. HP/Dell LTs look for a coded signal on the small pin in the center. When the coded signal is not present, the LT will function but the battery will not charge. Now you know.
โOct-24-2016 08:37 PM
โOct-24-2016 03:04 PM
โOct-24-2016 02:46 PM
โOct-24-2016 11:43 AM
ktmrfs wrote:RLS7201 wrote:
One caveat about HP & Dell LTs is there 3 wire power supply. You can NOT use an aftermarket power supply with them. I like running a after market DC-DC power supply in the MH. With a HP or Dell, you'll need to fire up an inverter when off grid.
Richard
I've had 3 HP laptops and 2 Dells that all had the ability to run off a 12V power supply that was available. same plug as the HP, just a 12V input to the charger instead of 120V. In fact two of the HP's had chargers that accepted either 12V or 120V inputs.
โOct-24-2016 09:29 AM
RLS7201 wrote:RoyB wrote:RLS7201 wrote:
One caveat about HP & Dell LTs is there 3 wire power supply. You can NOT use an aftermarket power supply with them. I like running a after market DC-DC power supply in the MH. With a HP or Dell, you'll need to fire up an inverter when off grid.
Richard
My DC requirement for my DELL INSPIRON 17R5737 is 19.5VDC @ 3.3A and uses a standard round DC connector with center pin on the DC output cable that plugs into the laptop.
The DELL 6TM1C external Transformer does have a three wire connection to 120VAC which I assume is two 120VAC wires and a ground connection... The DC output from this transformer uses a long cable with a standard size round DC connector that plugs into the laptop.
To run from an external DC Power Supply would only require the round standard DC connector plug and a +19.5VDC @ 3.34DC Amps capacity????
I don't see any problem running this laptop using an external DC power supply that would have 19.5VDC @ 3.34A capacity available.
I don't think I understand your comment about the three wire connection...
Roy Ken
Look closely, at the DC connector, there is a outer shell and inner shell that carries the power to the LT. HP/Dell LTs look for a coded signal on the small pin in the center. When the coded signal is not present, the LT will function but the battery will not charge. Now you know.
Richard
โOct-24-2016 09:25 AM
RLS7201 wrote:
One caveat about HP & Dell LTs is there 3 wire power supply. You can NOT use an aftermarket power supply with them. I like running a after market DC-DC power supply in the MH. With a HP or Dell, you'll need to fire up an inverter when off grid.
Richard
โOct-24-2016 09:17 AM
โOct-24-2016 06:48 AM
โOct-23-2016 06:28 PM
โOct-23-2016 03:33 PM
โOct-23-2016 03:20 PM
โOct-23-2016 03:12 PM
RoyB wrote:RLS7201 wrote:
One caveat about HP & Dell LTs is there 3 wire power supply. You can NOT use an aftermarket power supply with them. I like running a after market DC-DC power supply in the MH. With a HP or Dell, you'll need to fire up an inverter when off grid.
Richard
My DC requirement for my DELL INSPIRON 17R5737 is 19.5VDC @ 3.3A and uses a standard round DC connector with center pin on the DC output cable that plugs into the laptop.
The DELL 6TM1C external Transformer does have a three wire connection to 120VAC which I assume is two 120VAC wires and a ground connection... The DC output from this transformer uses a long cable with a standard size round DC connector that plugs into the laptop.
To run from an external DC Power Supply would only require the round standard DC connector plug and a +19.5VDC @ 3.34DC Amps capacity????
I don't see any problem running this laptop using an external DC power supply that would have 19.5VDC @ 3.34A capacity available.
I don't think I understand your comment about the three wire connection...
Roy Ken