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$ 9.95
Sealed Lead Acid Battery Charger UPG D1724

Sealed Lead Acid Battery Charger UPG D1724


Precio Reg. $ 14.95
Precio: $ 9.95
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Ahorra $ 5,00 ( 33,44% )

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Sealed Lead Acid Battery Charger UPG D1724

Sealed Lead Acid Battery Charger UPG D1724
  • For use with sealed lead acid batteries
  • 6V/12V Switchable Single-Stage with Alligator Clips
  • Alligator clips
  • UPG D1724 Sealed Lead Acid Battery Charger
For use with sealed lead acid batteries; 6v/12v switchable singe-stage charger ; alligator clips; 500 mah.

Precio de lista: $ 14.95 Precio: $ 9.95

UPG UB645 Sealed Lead Acid Batteries

UPG UB645 Sealed Lead Acid Batteries
  • Used In Ups Backup Systems, Spotlights, Flashlights, Exit Lighting & Other Equipment
  • 6V, UB645, 4.5 AH
  • This item is not for sale in Catalina Island
UPG 85998/d5733 Sealed Lead Acid Batteries (6v; 4.5 Ah; Ub645)

Precio de lista: $ 14.99 Precio: $ 4.69

What customers say about Sealed Lead Acid Battery Charger UPG D1724?

  1. 74 of 75 people found the following review helpful
    1.0 out of 5 stars
    Use at your own risk, not really a battery charger, may damage your battery., October 21, 2013
    By 
    Paul Clifford (Newark, CA) –
    (REAL NAME)
      

    Verified Purchase(What’s this?)
    This review is from: Sealed Lead Acid Battery Charger UPG D1724 (Automotive)
    When I bought this product, I feared it might be too good a deal to be true. Unfortunately, testing confirmed that fear. This device should not be sold as a battery charger because it was not designed to be a battery charger — it is a simple, unregulated, wall-wart power supply with alligator clips.

    I received a charger identical to that in the photo. It’s marked as a model 41A0163 with a listed output of 6V/12V and 500 mA (the voltage is switch selectable). Because there are no other specifications, I tested it to determine its actual voltage output. I found that in the 12V position this wall-wart style power supply outputs an unregulated and unfiltered, full-wave rectified voltage, of 12.3 Vrms and 17.4 Vpeak.

    If you measure the output with a digital multimeter, you’ll measure the average value of the full-wave rectified voltage, at 11.5 V. But that’s just the average value of a waveform that peaks at 17.4V. If you place a small capacitor across the output, you’ll measure the peak voltage.

    This product is not really a battery charger, but mis-marketed as one. Instead, it’s a low quality wall-wart power supply with alligator clips attached. It will supply sufficient current to charge a small, several Ah, battery in a few hours, at the risk of overcharging and permanently damaging it. It has insufficient current capability to charge large batteries in a reasonable time, but may charge then over the course of several days. Those using it with large batteries probably haven’t done much harm to their battery, as larger batteries will take a long time to overcharge at the small current this charger outputs. But if you leave it connected indefinitely you’ll probably damage even the largest batteries.

    If you use this “charger” with smaller batteries they’ll quickly start to fizz and bubble — something you don’t want sealed lead acid batteries to do, ever. If you do charge a low capacity battery with this charger it may appear that the battery charged properly, but if you subsequently measure the battery’s capacity or lifetime you’ll find they’ve been badly compromised.

    Real chargers are either fixed-voltage (also called “float”) chargers or switch-mode chargers. Fixed voltage chargers provide a constant voltage limited to the range 13.5-13.8 V. A smaller voltage won’t fully charge a lead acid battery, and a much greater voltage will damage it.

    The fancier switch-mode chargers do apply a greater voltage (about 14.7V) initially, but switch to the 13.5-13.8 V sustaining voltage for the final charge and subsequent trickle charging. While it’s ok to provide more than 14V to a battery during the initial, high-current charging phase, providing a long term voltage of more than 14V corrodes the positive electrode and electrolyzes the water. This charger ultimately supplies up to the 17.4V peak, far too much. If you use this “charger” on small sealed lead acid batteries, as the battery voltage rises above 14V if you place your ear to the battery you’ll be able to hear it start fizzing. That’s the sound of damage to your battery.

    If you monitor the battery voltage closely while charging, and understand the dynamics of battery charging enough to know when to stop, then you might be able to use it safely.

    For the DIY minded, you can fix this charger by combining it with a downstream voltage regulator (you can find some LM2596 buck regulators here on Amazon) that you adjust to output a fixed 13.7 V.

    The bottom line: As a battery charger, if you think this product is too good to be true you’re right. For use as a 12V wall-wart power supply, it’s expensive, unregulated, and unfiltered. Either way it’s a very poor value for the money.

    You can find battery specs and good information on how to correctly charge them at the power-sonic dot com website.

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  2. 47 of 51 people found the following review helpful
    5.0 out of 5 stars
    Simple and basic 6 or 12 volt lead acid charger, June 24, 2010
    By 
    Jon Snow (Honolulu, Hawaii USA) –

    Verified Purchase(What’s this?)
    This review is from: Sealed Lead Acid Battery Charger UPG D1724 (Automotive)
    This is about as simple as a charger can get. An AC plug in transformer with a voltage select switch and color coded alligator clips at the end of the cord. It charged both of my batteries (6 and 12 volt) without any problems and gets only slightly warm to the touch. The charge rate varied between 400 ma to 40 ma (depending on battery condition) and produces pulsating DC.

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  3. 33 of 37 people found the following review helpful
    4.0 out of 5 stars
    Seemed to take care of beeping house alarm!, August 7, 2011
    By 
    Paul Johnson “Rock” (Fredericksburg VA USA) –

    Verified Purchase(What’s this?)
    This review is from: Sealed Lead Acid Battery Charger UPG D1724 (Automotive)
    Arrival of very hot weather seemed to coincide with annoying beeping of my house alarm. Further investigation determined that the battery needed charging.

    12V sealed lead-acid batteries of the type used in many house alarms are pretty expensive. Fortunately, they are rechargeable. This charger only costs about 1/4 to 1/3 of the price of a new battery.

    I let it charge during a weekend for a total of about 12-16 hours. I don’t recommend leaving things like this charging while you’re away from home or asleep, just in case.

    No more beeping, so it seems to have worked. The charger does NOT have an LED light or other feature to indicate that it is “on” or whether in fact it is “done” charging.

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  4. 53 of 55 people found the following review helpful
    5.0 out of 5 stars
    Performs as expected, August 12, 2010
    By 
    The WB (Michigan) –

    Verified Purchase(What’s this?)
    This review is from: UPG UB645 Sealed Lead Acid Batteries (Electronics)

    This battery was purchased as a total replacement battery pack in a Wildgame Innovations (WGI) 1.3 MP strobe Game Camera under the Timberview brand name. See my review of that camera. This game cam used 4 “C” cell batteries. At best the batteries would last 6 weeks. After buying several packages of “C” cells, it was time to trim our battery cost.

    The battery was quite a bit smaller than I expected. Out-of-the-box, this battery was charged (6.34 volts), but we topped it off before the battery was placed into service (7.30 volts). Furthermore, given the reserve capacity rating of this battery in comparison to the reserve capacity of an Alkaline “C” cell battery, we should get far more use time out of this battery. How much more? That can only be evaluated at a later date. As a side note — WGI newest deer cam models have the capability of connecting a 6 volt battery pack, such as Amazons Wild Game Innovations External 6V Battery Pack. WGI uses a pair of batteries of comparable specifications to the UPG UB645 inside their battery pack.

    I will update this posting as we monitor this battery’s performance in the field. Preliminarily (2 days use), this battery is performing as expected.

    The application this battery is now being used in, the size, being completely sealed from the elements and the current price, we are hard pressed to find fault with this purchase.
    *****
    9/2/2010 – Update

    First field test with the deer cam over a 19 day time period in the woods and in wet conditions — 237 pictures with approximately 85% being flash pictures. ALL flash pictures came out clear, no black pictures when the camera triggered and the battery couldn’t supply enough power to charge the flash strobe. Voltage test in the field — 5.99 volts under a minor load. We recharged the battery to 6.67 volts and placed this battery back into service with the deer cam in the woods. We are very pleased with this battery’s performance.
    *****
    9/29/2010 – Update

    28 days and 330 pictures (85% flash) in the field — The camera was shut off when we retrieved it. The last 24 pictures were black, where the flash couldn’t recharge due to the drop in battery voltage. The battery was drained down to 3.57 volts when it was brought back for recharging. After a slow 12 hour recharge, the battery was back up to 6.67 volts.

    I cannot fault this battery. The drain came from the camera and the flash itself. Performance between “C” cell batteries and this one appear to be closely related with one major exception – the ability to recharge this battery, unlike the “C” cells that have to be replaced. We are going to monitor and recharge this battery more closely in the future. I’m disappointed in the prospect that this battery doesn’t have the long term capacity to supply power to this deer camera over the long, cold Michigan winter.
    *****
    10/05/2010 – Update

    We returned to this battery after 5 more days in the field. 150 pictures and all were perfect. The battery voltage was at 6.20 volts (80% flash pictures). Pulled the battery and recharged to 6.67 volts. One night, with overnight temperatures dropping to 22 degrees, we captured 250 flash pictures – all clear in full color. The battery voltage was at 6.0 volts. We recharged the battery and placed back into service.

    We have now obtained a 9 volt solar panel charger for this battery. Our next trip up, this solar panel will be connected to our battery and camera. We anticipate this will give the battery a much needed boost in life over its long winter task.

    In all, this battery performed as we expected. The cost savings in “C” cell battery’s has now more than paid for itself.
    *****
    1/11/2011 — Second battery

    We have a second deer cam Wildgame Innovations IR5 5.0MP Digital Game Scouting Camera with Infrared Flash(see my review of this game cam) in the field now. It too is developing battery issues, especially with the flash at night. The batteries are “C” cell’s and we are going through too many to be economically viable. So, just like its smaller cousin, we are hard wiring in this battery for increased performance and longevity in the field.

    Buying a second similar battery for the very same purpose shows how happy we are with these batteries. The cost savings is also a big plus!
    *****

    7/2/2011 – Third battery and Update

    We purchased our third deer cam along with a third battery. The new camera is a 2011 S1.3X strobe deer camera with an external battery connection as sold by Amazon as…

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  5. 12 of 12 people found the following review helpful
    5.0 out of 5 stars
    Good replacement for a Peg Perego Ride Along, February 25, 2011
    By 
    T. Kim
    (REAL NAME)
      

    Verified Purchase(What’s this?)
    This review is from: UPG UB645 Sealed Lead Acid Batteries (Electronics)
    I purchased this battery as a replacement for a Peg Perego Thomas the Train Ride along Engine. Merely take the green top off the old battery, slap the green top on this new battery and you are good to go. Peg Perego batteries are around 4 times the price. Save yourself some $ and get a generic battery that operates at the same efficiency.

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  6. 10 of 10 people found the following review helpful
    5.0 out of 5 stars
    Good price Good Products, March 31, 2010
    By 

    Verified Purchase(What’s this?)
    This review is from: UPG UB645 Sealed Lead Acid Batteries (Electronics)
    Good price for this battery that fits my portable inflater. The is really handy when camping & the battery lasted through one mattress, 2 inflatable kayaks, & a 10ft raft. Not bad for one charge.
    Dr. Carl

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