WKA12-8F2 SLA Battery - 12 volt 8ah (amp hour) Genuine Brand

worked great

Updated review, date: 1-9-2016. Revision, B:This battery is not as pictured. This battery is their own brand, that to me, appears to be a cheaper battery, than a VB Battery, which is pictured. I'd give it 5 stars, if it was what was purchased. The prices was about the same as the UB1280, otherwise, I would have complained to Amazon, about them misrepresenting the battery. I'm not saying that its a bad battery, it just I chose this battery because it, was not a, no-name-brand battery. Or an UB1280, and, well, that is what it just appears to be...Update:I now used it, so far it works OK.--------------------------------------------------------------------------------------What I am using the battery for:I installed this battery into the, 12v portable power source, that I am making out of an old cheap car jump starter (it original had a 12v 8ah gel battery with tabs (a type not available), for the lugs that the #6 jumper cables were connected to). The old jump starter (a "Motor Trend Mini), has the built in charge circuits (very basic) and two LED work lights and two, two common 12v accessory plugs, often used for cellphone changers and such (that I can plug my HAM HT a VX7r (E-DC-5B) charger into), or an KX3 into, etc. It also has a 3-LED charge and battery status indicators - red for above ~10v, 12.7v for yellow and 13.1v for green for the status) - what else would I need...My conversion of the jump starter to portable power source:I had to cut off the connectors it had and install the new battery and get rid of the cheap jumper cables (saved for some other use, some other day). The common battery type that fits this box has F2 (0.25in) or the smaller F1 (0.187in) connectors this one has (I hate F2 (and F1) connectors, because they are not ideal for caring the currents they often are asked to carry, and then become unreliable and over heat and loosen up further than thy are already). I made two APP cables one long one short. Both are fused using a 10A circuit beaker (fuses are hard to come by sometimes). The APP cables come out of the same holes, as were the jumper cables came out of originally.Then I load tested it for 15A and 30A. I made it for 12v 10A max (3-5A typical), with no internal voltage drops. I only expected it to work just OK for the 15A (I used the 30A to test-blow the 10A C/B, witch it did after few seconds). I was use stranded #14 wires throughout, this includes the two Anderson PowerPoles (APP30), that replace were the jumper cables used to come out of the box. I used such heavy wire to reused the internal voltages to an absolute minim for 10A or less circuits.

I obtained two of these SLA batteries as a replacement for two SLA batteries that became heavily sulfated after fairly heavy usage for a inexpensive 250 watt electric motor assist bike kit that I obtained last year.They worked flawlessly for the days that I used them until I received a much more expensive but better Ping Lithium Ion battery DIY upgrade (those types of batteries are much better for electric bikes having much more storage density,better longevity,lighter weight and can be more deeply discharged).However even though I am not currently using them (the SLA batteries) for such they still are useful for charging my 3.6 Megawatt (2,000 Volts at 1,800 Amperes) for 1/2000th of a second pulsed power supply (it's for a 10 Joule output Class IV pulsed flashlamp pumped solid state laser system).These would work well also for UPS systems or other electronic projects too and especially handy for small portable solar power systems.They don't last very long in usage on electric bikes (lasted me about 7 months) and the number of times one can cycle (charge) them in this application is low until they sulfate however they do have the advantage of being very inexpensive though heavy for a bicycle.The shipping was quick and I understand the shipping costs as these are heavy though compact items.This battery also gives an extra 1/2 Ampere Hours over the more common 7.5 Ampere Hour Type.

I've purchased two of these batteries; one for each of my small UPS units. I immediately replaced the one that failed, and then replaced the one in the second unit a few months later when it failed. The first replacement, used for my router and printer, lasted almost 33 months, as it just failed today after a power bump. The second one, used for my entertainment system, is still working normally at 30 months. For the price, I guess that's fine, but the originals lasted nearly twice that long. Over time, I may discover that the cost may not be much different than an OEM battery. If that's the case, it's just a matter of how often you're willing to replace them.

Original purchase on 8-8-2013 of two UB1280 batteries (vicbatteries.com) one labeled as Platinum Series. My 12 year old APC XS-1000 UPS started beeping loudly, complaining that the OEM battery pack had quit. I found these replacement batteries (UB1280) providing 8 amp hours each to replace the two original 7 ah batteries. It was necessary to disassemble the pack by removing some tape and unplugging a couple of leads from each battery and reassembling with the new batteries. The process took less than 15 minutes and the UPS was up and running again but with 14% more power than before. The repair was well worth the investment.This week, after 22 months of use one of the batteries, maybe both, I have not had a chance to check, has died. Disappointed but for the price it was a fair if not a great deal. I will try them again.12/2/2017 Finally I got around to checking the UPC. One of the batteries has leaked and corroded the terminals and surrounding plastic bits. Very disappointed and surprised. I had not expected the leakage. (I had forgotten that I had posted a review on this site and posted one with pictures on a site showing the same battery that I had purchased.) If what is pictured on this site is correct, the battery is possibly different from what I had.