Sears has the DieHard 10 amp Manual Battery Charger (71221) on clearance for $15 with free in-store pickup only. Charges a variety of 12 volt batteries in 3 to 5 hours.
Retail: $50

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    fxp Ben's cred: 197
    Posted 6:55 am PDT 10/27/14

    You need 50 amps to hot start a dead battery and this has to be connected for around an hour to turn the engine. It also has no trickle 2 amp charge which is really handy. Nice price, but really very limited capability something you'd get in the 60's.

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    LJW Ben's cred: 259
    Posted 10:39 am PDT 10/27/14

    Spend a little more and get a BatteryTender. Although, it won't jumpstart your car either -- but at least it will make sure your battery is kept in top shape

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    dave_c Ben's cred: 3806
    Posted 12:47 pm PDT 10/27/14

    It's seldom the case that your battery is so drained that you'd need 10A for an hour to get it to a level that will start the vehicle. I agree that more features would be nice (It does have selectable 2A in addition to 10A) but on the other hand that's more to break and more difficult to repair.

    My sump pump charger failed because of a single 6 cent transistor (among many on the PCB) going out and I was fortunate to find the fault before giving up and buying a new charger.

    This one is so simple it probably only has a transformer with a tapped winding for 2A and rectifier diode(s) so the only things likely to fail are the transformer thermal fuse, a diode, or the switch itself... all parts you can source an equivalent of yourself for DIY repair.

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    Ben's Price
    • DieHard 10 amp Manual Battery Charger $22 at Sears
    • $22
      Retail: $50
    • DieHard 10 amp Manual Battery Charger $22 at Sears
    • $22
      Retail: $50
    • DieHard 10 amp Manual Battery Charger $25 at Sears
    • $25
      Retail: $50
    • DieHard 10 amp Manual Battery Charger $25 at Sears
    • $25
      Retail: $50
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