Model 5740G-6979 Looking for compatible battery (to replace AS07A31)

Cryogenius
Cryogenius Member Posts: 3 New User
edited November 2023 in 2020 Archives
I tried going directly to Acer for this legacy battery and they sent me to an authorized dealer.  That dealer looked long and hard but was unable to make it happen.  Twice I have ordered supposedly compatible batteries from Amazon and E-Bay, but these are 11.1 V and 5200 mAh and the original is 10.8 V and 4400 mAh. Although the batteries fit and the higher ratings sound like an improvement, the replacement batteries are not detectable by the laptop (I tried the battery reset trick, etc.).  I am taking a long shot here, hoping that someone has found a truly compatible battery for this model I purchased in 2015. Any suggestions?

Best Answers

  • Commodore_1995#
    Commodore_1995# ACE Posts: 98,349 Trailblazer
    Answer ✓
    check: BIOS Changes battery critical from 3% to 5% and battery warning from 5% to 7% Data: 2010/01/19 Version: 1.16 Vendor: Acer Tamanho: 8.4 MB Download
    BATTERYBT.00603.041BATTERY 6-CELL LI-ION 4400MAH - SANYO AS-2007A 3S2P 4400MAH NORMAL TYPE
    BATTERYBT.00604.024BATTERY 6-CELL LI-ION 4400MAH - SONY AS-2007A 3S2P SONY 4400MAH NORMAL TYPE
    BATTERYBT.00605.020BATTERY 6-CELL LI-ION 4400MAH - PANASONIC AS-2007A 3S2P 4400MAH PSS
    BATTERYBT.00607.015BATTERY 6-CELL LI-ION 4400MAH - SIMPLO AS-2007A 3S2P PANASONIC MAIN COMMON PSS
    BATTERYBT.00607.019BATTERY 6-CELL LI-ION 4300MAH - SIMPLO AS-2007A 3S2P LGC PANA LI+ 6C 2.2AH
    BATTERYBT.00607.034BATTERY 6-CELL LI-ION 4400MAH - SIMPLO AS-2007A 3S2P SAMSUNG 4400MAH MAIN COMMON SDI 2.2MAH F TYPE
    Oi! Eu não sou sou a cortana! Mas estou aqui para ajudar! Hi! I'm not the cortana! But I'm here to help!
    Se você gostou da minha resposta, marque como solução clicando em sim! If you liked my answer, mark it as a solution by clicking on yes!
    Aceite somente a resposta que ajudou a solucionar o seu problema! Please accept only the response that helped to solve your problem!
    Detection tool click here to find the serial number or partnumber of your model!                                                          
                                                      
                                                     egydiocoelho Trailblazer
     
    ProductKey clique aqui para descobrir o serial do windows! click here to discover the windows serial!
    Para usuários da comunidade inglesa, espanhola, francesa e alemã, usarei o google tradutor! :)
    For users of the English, Spanish, French and German community, I will be using google translator! :) 
  • Commodore_1995#
    Commodore_1995# ACE Posts: 98,349 Trailblazer
    Answer ✓
    There are voltages that are equivalent. For example:
    3.6V = 3.7V
    7.2V = 7.4V
    10.8 V = 11.1V
    14.4 = 14.8V
    It is a minimal variation, but they are compatible.
    Oi! Eu não sou sou a cortana! Mas estou aqui para ajudar! Hi! I'm not the cortana! But I'm here to help!
    Se você gostou da minha resposta, marque como solução clicando em sim! If you liked my answer, mark it as a solution by clicking on yes!
    Aceite somente a resposta que ajudou a solucionar o seu problema! Please accept only the response that helped to solve your problem!
    Detection tool click here to find the serial number or partnumber of your model!                                                          
                                                      
                                                     egydiocoelho Trailblazer
     
    ProductKey clique aqui para descobrir o serial do windows! click here to discover the windows serial!
    Para usuários da comunidade inglesa, espanhola, francesa e alemã, usarei o google tradutor! :)
    For users of the English, Spanish, French and German community, I will be using google translator! :) 

Answers

  • Commodore_1995#
    Commodore_1995# ACE Posts: 98,349 Trailblazer
    Answer ✓
    check: BIOS Changes battery critical from 3% to 5% and battery warning from 5% to 7% Data: 2010/01/19 Version: 1.16 Vendor: Acer Tamanho: 8.4 MB Download
    BATTERYBT.00603.041BATTERY 6-CELL LI-ION 4400MAH - SANYO AS-2007A 3S2P 4400MAH NORMAL TYPE
    BATTERYBT.00604.024BATTERY 6-CELL LI-ION 4400MAH - SONY AS-2007A 3S2P SONY 4400MAH NORMAL TYPE
    BATTERYBT.00605.020BATTERY 6-CELL LI-ION 4400MAH - PANASONIC AS-2007A 3S2P 4400MAH PSS
    BATTERYBT.00607.015BATTERY 6-CELL LI-ION 4400MAH - SIMPLO AS-2007A 3S2P PANASONIC MAIN COMMON PSS
    BATTERYBT.00607.019BATTERY 6-CELL LI-ION 4300MAH - SIMPLO AS-2007A 3S2P LGC PANA LI+ 6C 2.2AH
    BATTERYBT.00607.034BATTERY 6-CELL LI-ION 4400MAH - SIMPLO AS-2007A 3S2P SAMSUNG 4400MAH MAIN COMMON SDI 2.2MAH F TYPE
    Oi! Eu não sou sou a cortana! Mas estou aqui para ajudar! Hi! I'm not the cortana! But I'm here to help!
    Se você gostou da minha resposta, marque como solução clicando em sim! If you liked my answer, mark it as a solution by clicking on yes!
    Aceite somente a resposta que ajudou a solucionar o seu problema! Please accept only the response that helped to solve your problem!
    Detection tool click here to find the serial number or partnumber of your model!                                                          
                                                      
                                                     egydiocoelho Trailblazer
     
    ProductKey clique aqui para descobrir o serial do windows! click here to discover the windows serial!
    Para usuários da comunidade inglesa, espanhola, francesa e alemã, usarei o google tradutor! :)
    For users of the English, Spanish, French and German community, I will be using google translator! :) 
  • Cryogenius
    Cryogenius Member Posts: 3 New User
    Thanks for the information agydiocoelho!  I did try earlier to update the BIOS to the 1.16 version, but the update failed.  I will take a look at the batteries you listed and see if I can find one that fits.  So far I have only found 11.1 volt, which is exactly 3% above the 10.8 volt of my original battery.  Perhaps that is the problem - the manufacturer's margin for the guarantee is making the battery voltage just over the 3% (and therefore undetectable).  I need to find a way to make the BIOS update work.
  • Commodore_1995#
    Commodore_1995# ACE Posts: 98,349 Trailblazer
    Answer ✓
    There are voltages that are equivalent. For example:
    3.6V = 3.7V
    7.2V = 7.4V
    10.8 V = 11.1V
    14.4 = 14.8V
    It is a minimal variation, but they are compatible.
    Oi! Eu não sou sou a cortana! Mas estou aqui para ajudar! Hi! I'm not the cortana! But I'm here to help!
    Se você gostou da minha resposta, marque como solução clicando em sim! If you liked my answer, mark it as a solution by clicking on yes!
    Aceite somente a resposta que ajudou a solucionar o seu problema! Please accept only the response that helped to solve your problem!
    Detection tool click here to find the serial number or partnumber of your model!                                                          
                                                      
                                                     egydiocoelho Trailblazer
     
    ProductKey clique aqui para descobrir o serial do windows! click here to discover the windows serial!
    Para usuários da comunidade inglesa, espanhola, francesa e alemã, usarei o google tradutor! :)
    For users of the English, Spanish, French and German community, I will be using google translator! :) 
  • Cryogenius
    Cryogenius Member Posts: 3 New User
    Success! I did get the BIOS flash to work for version 1.16 (on later versions 1.22 and 1.28 BIOS flash was failing).  I went ahead and tried the second new battery which was sold by Fancy Buying on Amazon (Model number 4310).  It is detected and works perfectly. Thanks for your input  egydiocoelho !!!
  • You are welcome my friend.
    Oi! Eu não sou sou a cortana! Mas estou aqui para ajudar! Hi! I'm not the cortana! But I'm here to help!
    Se você gostou da minha resposta, marque como solução clicando em sim! If you liked my answer, mark it as a solution by clicking on yes!
    Aceite somente a resposta que ajudou a solucionar o seu problema! Please accept only the response that helped to solve your problem!
    Detection tool click here to find the serial number or partnumber of your model!                                                          
                                                      
                                                     egydiocoelho Trailblazer
     
    ProductKey clique aqui para descobrir o serial do windows! click here to discover the windows serial!
    Para usuários da comunidade inglesa, espanhola, francesa e alemã, usarei o google tradutor! :)
    For users of the English, Spanish, French and German community, I will be using google translator! :)