This is my experience witht the Noco Genius 5 smart battery charger. I bought this on the Black Friday sale at Amazon for $45.46 which is 50% off the list price. It is a smart charger that outputs up to 5 amps and can charve 12 Volt lead acid batteries, 12V AGM, 12V lithium, and also 6V batteries.
I tested this with four 12 lead acid batteries, all of them greater than four years old and two greater than six years old. Three were removed from service 1-2 years ago and were sitting on my garage floor. The fourth a group 35 battery manufactured 5/16, is currently in service on my Kubota tractor.
I tested the batteries before and after charging, using the Centech digital battery analyzer from Harbor Freight Tools. I double checked voltages with a standalone multimeter. All batteries were removed from the vehicle when charged. All batteries were topped off with distilled water prior to charging. Some of them took quite a bit of water, more than I expected. The after figures in the chart were after charging with the Genius 5 and then letting the battery sit for a day or two.
The battery on the Kubota tractor, the Genius 5 just charged up. There was not much difference in the before- and after CCA but the Genius 5 did bring it to a high state of charge. The other three batteries though, showed a marked improvement after sitting overnight on the Genius 5. None came all the way back to the original CCA rating on the label they had when new, but again these are 4-6+ year old batteries we are talking about.
The Costco Interstate group 24F that I replaced this summer, increased from 444 CCA to 497 CCA, a healthy gain of 53 CCA. It came out of a Toyota Venza 4 cylinder. Reported battery condition increased from 65% to 80%.
The other Costco Interstate group 35 came out of a Toyota Corolla almost two years ago. It went from 399 CCA to a whopping 566 cold cranking amps, and the condition increased from 70% OK to 90% Good. I would say on this one alone, the Genius 5 more than paid for itself. I did not really have to replace that battery at all.
The Sears DieHard Gold went from 592 CCA to 751 CCA, and increased from 80% Good to 100% Good. I could have saved my money by not replacing that one. After Sears went out of business there was not going to be an pro-rated warranty any more. Still, I would have to say I replaced it prematurely. It had discharged all the way down to 12.01V yet the Genius 5 brought it back to good capacity.
All in all I am impressed with the Noco Genius 5. It really is set it an forget it, you just turn it on and it runs through a variety of charging programs. When the battery is charged it stays in maintainer mode.
I tested this with four 12 lead acid batteries, all of them greater than four years old and two greater than six years old. Three were removed from service 1-2 years ago and were sitting on my garage floor. The fourth a group 35 battery manufactured 5/16, is currently in service on my Kubota tractor.
I tested the batteries before and after charging, using the Centech digital battery analyzer from Harbor Freight Tools. I double checked voltages with a standalone multimeter. All batteries were removed from the vehicle when charged. All batteries were topped off with distilled water prior to charging. Some of them took quite a bit of water, more than I expected. The after figures in the chart were after charging with the Genius 5 and then letting the battery sit for a day or two.
Costco Interstate 24F 700 CCA mfg 10/2014 | Costco Interstate 35 640 CCA mfg 10/14 | Costco Interstate 35 640 CCA mfg mfg 5/16 | Sears DieHard Gold 27F 825 CCA mfg mfg 10/16 | |
CCA before | 444 | 399 | 570 | 592 |
CCA after | 497 | 566 | 566 | 751 |
Voltage before | 12.28 | 12.26 | 12.53 | 12.01 |
Voltage after | 12.67 | 12.74 | 12.79 | 12.67 |
Megohms before | 5.95 | 6.62 | 4.64 | 4.47 |
Megohms after | 5.32 | 4.67 | 4.67 | 3.52 |
Battery life before | 65% OK | 70% OK | 90% Good | 80% Good |
Battery life after | 80% Good | 90% Good | 90% Good | 100% Good |
The battery on the Kubota tractor, the Genius 5 just charged up. There was not much difference in the before- and after CCA but the Genius 5 did bring it to a high state of charge. The other three batteries though, showed a marked improvement after sitting overnight on the Genius 5. None came all the way back to the original CCA rating on the label they had when new, but again these are 4-6+ year old batteries we are talking about.
The Costco Interstate group 24F that I replaced this summer, increased from 444 CCA to 497 CCA, a healthy gain of 53 CCA. It came out of a Toyota Venza 4 cylinder. Reported battery condition increased from 65% to 80%.
The other Costco Interstate group 35 came out of a Toyota Corolla almost two years ago. It went from 399 CCA to a whopping 566 cold cranking amps, and the condition increased from 70% OK to 90% Good. I would say on this one alone, the Genius 5 more than paid for itself. I did not really have to replace that battery at all.
The Sears DieHard Gold went from 592 CCA to 751 CCA, and increased from 80% Good to 100% Good. I could have saved my money by not replacing that one. After Sears went out of business there was not going to be an pro-rated warranty any more. Still, I would have to say I replaced it prematurely. It had discharged all the way down to 12.01V yet the Genius 5 brought it back to good capacity.
All in all I am impressed with the Noco Genius 5. It really is set it an forget it, you just turn it on and it runs through a variety of charging programs. When the battery is charged it stays in maintainer mode.