Dell Inspiron 7570 Laptop Battery

[UK Sentinel]

I have an Dell Inspiron 7570 Laptop Battery that keeps the laptop on powered for 10 minutes nowadays.

The battery is 42 wh – 11.4v – 3500mAh WDXOR Dell and I am looking for a good value replacement.

Seen the usual on Ebay with prices ranging from £35 to £80, similar to Amazon, but would not like to purchase an original (to expensive) but likewise, don’t fancy purchasing a 3rd party Dell battery that catches fire ?

Even some of the suppliers that appear via Google Adds have very poor reviews via TrustPilot and a lot of so called,  xxx.co.uk battery suppliers are really based in China etc

Any good recommendation most welcomed ?

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[SH]

i would avoid any third party battery .. because they do have …issues like they don’t last long after charging , charging takes alot time , sometimes battery software installed by Laptop OEM don’t accept it etc etc

so before u decide if u need new battery ..

look what’s your battery wear level 1st ?

1) – search of command prompt -> right click , run it as admin  –> than type ” powercfg /batteryreport ” ( without Quotation ) –> report will be generated
2) – look at the location where battery reported  generated ( usually generated in user folder )
3) – In report scroll down and under Installed Batteries take values of  Design Capacity and Full Charge Capacity
4) – now take values .. and calculate

{(Full Charge Capacity / Design Capacity) x 100} -100 = wear level of battery

or
u can use -> https://www.nirsoft.net/utils/battery_information_view.html

depending on how much wear level is …
1) – u can calibrate your battery , check if some software is running in background taking full processing power and discharging it fast , set power saver option when running laptop on battery

2) – if above not works .. than u can go ahead and buy new genuine battery

or  any u like

avoid a cheap, counterfeit, or improperly designed battery  to be safe

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[UK Sentinel]

@XRW – Thank you for the guidance, I used the Nirsoft tool and found the result was battery health 2.7% so ofto Amazon to purchase a Branded Dell laptop replacement battery

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[SH]

hmm 2.7%

what’s your Full Charge Capacity and Design Capacity values ?

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[UK Sentinel]

Details for anybody else interested in attachment

I used for report  (command prompt -> right click , run it as admin  –> than type ” powercfg /batteryreport ” ( without Quotation ) –> report will be generated) as detailed via @XRW

 

DESIGN CAPACITY – 41,998 mWh

FULL CHARGE CAPACITY – 1,140 mWh

 

 

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1. battery-report-1.html

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[SH]

{(Full Charge Capacity / Design Capacity) x 100} -100 = wear level of battery
= {(1,140 / 41,998) x 100} – 100
= {0.0271 x 100} – 100
= 2.71 – 100
= -97.29

so here battery used it’s 97% of it’s Capacity out of 100% … soo  it’s new battery time

 

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[UK Sentinel]

Thank you, the Nirsoft tool was accurate also (2.7%), so handy/easier for others to use before thinking of purchasing a new laptop battery

Interesting to see the maths in action proving my assumption

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[SH]

when new battery arrive ….  set custom battery charging in BIOS to help with battery degradation

press F2 when u restart laptop …. to enter BIOS

look at screenshot for rest of the option ….. set custom values according to your need ( but don’t set custom charge stop at 100% )

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[UK Sentinel]

SH wrote:

when new battery arrive …. set custom battery charging in BIOS to help with battery degradation press F2 when u restart laptop …. to enter BIOS look at screenshot for rest of the option ….. set custom values according to your need ( but don’t set custom charge stop at 100% )

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[Grisu]

we all know possible problems with china batteries (less power, not accepted by bios or not charged inside, problem on power on from battery, broken after 1/2 year of usage), but problem with old products that original batteries are either not available any more or very old and long time in stock so expensive and poor power capacity too.

-> there is no way to get old power back again, you would have to build your own battery!

Thats my personal finding and therefore I think no way than to try your luck with some cheap china import.

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[UK Sentinel]

Li-ion Batteries are one of those areas which can be tricky, Samsung had problems with their Note 7 batteries overheating.

Thanks for all your support ;-)

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[SH]

there is few way to know what your getting … in terms of batteries
1) – ask seller what’s manufacturing date of the batteries
2) –  if buying from Amazon ( u can scroll down and look for “Date first available at” ) .. this will give u some rough picture
3) – look at laptop models that particular batteries are compatible .. ( so example lets say u see Dell Vostro 5568 .. that mean it’s using 7th gen intel processor … so 3-4 years old ..so we know dell been using it last few years …….dell t provide 1 year warranty on all products )
———————————————————————————
now taking above stuff in picture ….. we know Lithium-ion discharge rate is about 3% to 4% per month approx ….. that mean full discharge will occur in about 2 years 1 month ( if kept in shelf as it is without charging )

now the typical estimated life of a Lithium-Ion battery is about 300+ charge cycles, One charge cycle is a period of use from fully charged, to fully discharged, and fully recharged again.

now if seller charged it 2-3  times per year to preserve battery and stored in good temp …before selling it   ……………. we can except wear level of 1% to 5% ( can still hold 99% to 95% of charge )

now if battery is counterfeit , taken from used laptop or stored in bad condition with no care  … wear level will be from 25% to 60%+ ………

you can calculate wear level and set your parameter .. about good and bad condition battery …

before buying .. check reputation of seller , reviews …seller location etc etc ..

combing everything will give you rough picture of what your going to get and you u can always return it . if it don’t falls as per your expectation and get another

Note: – I can be fully wrong about Lithium-Ion and above theory …..so  please take it as grain of salt.
——————————————————————

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[UK Sentinel]

I thought I would update this thread with my new Dell laptop battery stats,

New Laptop Battery:

DESIGN CAPACITY – 42,000 mWh

FULL CHARGE CAPACITY – 40,188 mWh

 

Old Laptop Battery:

DESIGN CAPACITY – 41,998 mWh

FULL CHARGE CAPACITY – 1,140 mWh

 

Will be interesting to see how long this new DELL battery last

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1. New-battery-report.html

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[SH]

coool , 95.69%  of hold capacity about 5% wear level  … so seller might have charged few times during shelf keeping

finger crossed … lets hope will last long

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[UK Sentinel]

I did wonder that also, but assumed there was a certain amount of loss (wear) due to manufacturing imperfections etc.

Thanks for all your assistance, an interesting exercise for myself and hopefully helpful for others also 

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