Replacing Battery Dell Laptop

How do I solve the problem of my Dell laptop battery is to have?
Whenever I move the cursor on the icon the battery on my screen, it will say "connected, loading". However, the battery will never rose from 2-3%. I had get a new AC adapter when my ex stopped working, and it is still not solved the problem. Should I replace the battery? I am hoping that there is not a bad connection on the motherboard. The laptop is a Dell Inspiron 1545.
Try to put the new battery or there is a problem between the card mother and battery
How to check your Dell battery
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Li-ion,11.10V, 6600mAh,Replacement Laptop Battery for Dell Inspiron 1520, Inspiron 1521, Inspiron 1720, Inspiron 1721, Vostro 1500, Vostro 1700,This laptop battery can replace the following part numbers of Dell: 312-0513, 312-0518, 312-0520, 312-0576, 312-0577, 312-0589, 312-0590, 312-0594, 312-0595, 451-10477, FK890, FP282, GK479, GR995, KG479, NR222, NR239, TM980 £24.50 This replacement battery is also compatible with the following models of Dell: Dell Inspiron 1520, Dell Inspiron 1521, Dell Inspiron 1720, Dell Inspiron 1721, Dell Vostro 1500, Dell Vostro 1700 ******Disclaimer: The batteries and other products supplied by our Company are [replacement for] sold for use with certain products of computer manufacturers, and any reference to products or trademarks of … |
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Samsung N220 10.1-inch Netbook (Intel Atom N450 1.66 GHz Processor, 1 GB RAM, 250 GB HDD, 6 Cell Battery, up to 11.2 Hours, Webcam, Windows 7 Starter, Red/Black) £329.00 … |
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Acer Aspire One A150-Ab Netbook, Linpus Linux Lite version, 1GB DDR2 RAM, 120GB HD (Sapphire Blue) … |