1. Try to charge your battery using a battery charger (Charging your battery using a 6-10 A battery charger (12 V) overnight. If the battery is fully charged, you probable do not need a new battery. Read the instruction manual before charging (don't put the wrong plug on to your car's battery, be careful. Your battery has sulfuric acid in it. It could be spilled or explored if you don't follow the instruction. Wear protective goggle/face mask and protective gloves). The current drops from 6-10 A to around 2 A, when the charging is done.
2. If your battery could not be charged overnight by a 6-10 A battery charger (the charging current remains
in 6-10 A), your battery is dead.
3. If your battery is dead, buy a battery from Costco or Walmart, don't buy a Honda battery (I had 2014 Accord, for the first 4 years I had used 3 new battery, two of them were Honda and none of them last more than two or three years). The third one is the one I'm still using, which is from Costco, is ($70-80) much cheaper than Honda's (Around $120-150) and last much longer.
4. Don't try to drive with a dead battery. Your car's spark plug, fuel pump and display panel etc. need a battery to work.
5. Ask your friend to buy a battery from Costco (sale's personnel could find the one for your car) or Walmart (they have a book in which you could find a particular battery for you from their stock).
6. If your don't drive often, use a battery tender (0.5-1.0 A, 12 V), charge your battery following the instruction from the manufacturer.
7. Always take a jump starter with you (choose a Lithium-iron based, not sealed lead acid based battery) in case you could not start your car at home or any other places.
