Hello. This is my first post here as I am in need of some help with this one. I usually work on Macbooks but trying to fix this one for a family member. This computer originally turned on with AC adapter, but would not charge the battery. New battery was purchased and still same issue. Windows says its charging, but percentage would not increase from 1%. I checked the board and found a short to ground on the BATT+ rail. I found the short was caused by either PC263 or PC264 (I replaced both to be safe). Now it will charge the battery, but will not run off the battery alone. I let the battery charge to 100% and it still turns off when I unplug the charger. With just the battery connected, I am getting cycling voltage on BATT+ and B+ from about 8v down to 2v. With the battery and charger connected, I get steady 12.6v on these rails, and the board starts. I replaced the ISL6251 with a new one, but still have the same issue. I am confused on what could be causing this, so any help is appreciated. I have attached the schematic I am using.
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Re: Gateway NV59C works on charger, not on battery
100% sure the battery is good?OpenBoardView — https://github.com/OpenBoardView/OpenBoardView -
Re: Gateway NV59C works on charger, not on battery
The battery is new and I tested the battery alone with my meter and its outputting 11v steady when not connected to the board. Once I connect it to the board, the voltage starts to cycle.Comment
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Re: Gateway NV59C works on charger, not on battery
Battery being new does not mean it's good, neither does getting a voltage reading with the DMM. It can very well not be able to sustain any current draw.OpenBoardView — https://github.com/OpenBoardView/OpenBoardViewComment
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Re: Gateway NV59C works on charger, not on battery
I appears it was the new battery that was bad. I got the original battery and installed it and it charges and runs from the battery only now. Sorry for wasting your time and thanks for the help.Comment
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The ISL88739 & ISL88739AHRZ are a highly versatile combo battery charger
configurable for operating as either a Hybrid Power Boost (HPB)
charger or a Narrow VDC (NVDC) charger, supporting 2-, 3-, or
4-cell batteries. Both configurations allow the battery to work with
the adapter together to supply the system load when it exceeds
the adapter capability, referred to as system Turbo mode. HPB
charger configuration reverse-boosts battery energy to the system
bus to help the adapter provide the system power in Turbo mode.
NVDC charger configuration...11-05-2024, 03:28 PM -
ISL6257HRZ ISL6257HRZ-T Laptop Battery Charger Datasheet
Highly Integrated Narrow VDC Battery Charger for Notebook Computers
The ISL6257HRZ ISL6257HRZ-T is a highly integrated battery charger controller
for Li-Ion/Li-Ion polymer batteries. ISL6257 is designed for
Narrow VDC applications where the system power source is
either the battery pack or the regulated output of the charger.
This makes the max voltage to the system equal to the max
battery voltage instead of the max adapter voltage. Operating
at lower system voltage can improve...11-05-2024, 04:43 PM -
I have an RC radio handset(Taranis QX7) which doesn't have internal battery charger which means I had to remove the battery every time I needed to charge it.
So to improve it, I added a 15W USB-C charger board(link) inside and soldered it to the same connector on the PCB where the battery plugs into, great, now I can simply charge it with a USB-C cable.
but the problem I found is that after the radio sat for two weeks without being used the 2S 18650 battery that I'm using was at 4.2V!
So the battery is backfeeding the charger and being drained.
How can I prevent... -
My question pertains to understanding the control circuity inside a Dell PT434 type battery used in Dell E6400, E6410 and other Dell notebooks?
Does anyone have a circuit diagram for the inside of a Dell PT434 battery and/or a description of how the control lines work to control this battery?
My reason for asking is I have a battery which I cannot get to charge beyond 1% in a Dell E6410 or E6400.
The LED bar graph charge indicator on the battery shows one LED lighted when the info button is pressed.
I have tried multiple different Dell power adapters. My Dell... -
Hello.
Have this HP 650 G1 that works ONLY when battery first and then attach charger. otherwise it not work with charger or battery only.
i cannot fing what is wrong with it. ACDET - ok, ADP_A_ID - 3.3V ACPRESS, Mosfets looks ok. even when working board dont see battery . data link on battery is ok 3.3V
this charging circuit is hard. anybody knows what to measure?
HP 650 G1
6050A2566401-MB-A04
sn - 5CG52238HF...
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