spiderzvow
hard to tell battery only charges when the car is at a certain RPM so if u were on the highway you will probably have enough juice to start it.

Richard B
maybe. the battery may be old and not "hold the charge" do not turn on any lights electrical stuff and try to start it a home battery charge can be bought for about $50 or so drive for a few hours total and it should ge as good as ever IF it is ok

mdk68gto, ase certified m tech
On a good battery. I would still drive it home and put it on a slow charge for as long as 24 hours 4 a deep saturating charge. If the battery is 4 years or older, take it yo a shop and have it tested.

H.M.C speed
If the battery is old / used up, all the charging in the world isn't gonna save it. If it went dead by leaving something on, it should be ok after charging. If it is just old, it's time for a new one.

Logikal
How long depends on several factors. 1) how old is the battery? If more than 6 yrs old it probably should be replaced. Older batteries develop these 'tendrils' or 'dendrons' which can inhibit the battery's charging (same goes for rechargeable batteries - it's why they don't come all the way back to 1.5v after a few recycles.). Do you see any white or yellow powder built up around the terminals? If so, these must be cleaned before you try to recharge. Fortunately, fixing this is very simple. Remove the cables from the battery. Take a few cups of water and add a tsp of baking soda. Mix & pour over the terminals (they will bubble up as the baking soda neutralizes the acid.) You may need to use a bit of steel wool to help remove heavy crusts. Then rinse with clear water & dry. Apply a bit of battery terminal grease (any auto parts store has this for a couple of bucks then reattach the cables & tighten them firmly. Jump your battery properly - positive to positive, the negative of the GOOD car to a metal connection or frame of your car. NEVER connect both ends of the negative cables to batteries...they CAN & DO explode! 2) Is your alternator in good shape? A loose belt or bad alternator can take a LONG time to recharge a battery 3) Have you turned everything else off i.e. the radio, a/c or heater, lights etc? These will drain the power faster than your alternator can replenish it. So, if you still want to recharge it, first see if there are caps on the top of the battery. If so, CAREFULLY remove them - opening them away from your face. If you can see the grills of the battery sticking up out of the liquid add distilled - NOT tap - water to the proper depth. Then replace the caps. If there are no caps yours is a sealed battery that can't be checked. The best way to recharge a battery is with an inexpensive battery charger rather than by jump starting it car to car. (That's for emergencies only). Charge batteries OUTSIDE - never indoors! (I had a neighbor accidently burn his house down doing this). This way you can leave the charger on and watch to see if the recharge takes. If it won't charge, then the battery is no good. After you get your car running (with all accessories off) it should be checked with a battery tester. If you don't have one leave the car running for about an hour - If it goes dead again then you have to accept the battery's no good. If you live in a cold climate you definitely need a new battery before the next cold season. IF the battery's in fair shape it should take a full charge in about 4 hours or less. If it takes longer - the battery's no good.