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Patience, and an aversion to braking, greatly improve fuel economy. However: That was actually the second of my grandmother's three life rules, right after

@Dilly’S Willy

Kinetic energy is proportional to mass and the square of speed. E equals one-half em-vee-squared. The fastest moving point on a rolling wheel is the topmost, at twice the speed of the vehicle. Its opposite point in contact with road has speed zero - if it doesn't then it's in a skid. The mean...

A rolling wheel behaves as if its mass were multiplied by some factor. The multiple is less than 2. It would be exactly 2 if all of the mass were on the tread. When you put heavier tires on your Jeep, it's safe to assume most of the incremental mass is near the tread, so go ahead and double it...

This myth gets repeated a lot. Here it's a factor of 4. I've seen worse. The energy in the rotational component is less than that of the translational component. It takes less than twice as much energy [power, torque, force transverse to the tread, or whatever real men care about] to...

It all depends on how and where it's driven. My 2023 with 4.10 diff and 35" MT Baja Boss LT255/85R17 used 191.258 gallons for the last 3801 miles = 19.87 mpg. That was mostly highway, 55-65mph, with lots of 3-4% grade. Headwinds absolutely destroy that number.

Me too. There aren't a lot of bright spots in this report, other than moving 16% more Wranglers and Gladiators. If it took a 14% lower ASP to accomplish that, well, you do the math.

This is not the slam dunk case you might think. I spent the better part of two decades in the defense technology industry. It the customer wanted a frobnicate function we'd give them one.

The Victron Blue Smart IP22 is a 4-stage constant voltage charger, available in 15, 20 and 30A versions. Its presets are good for general users, but its real strength is that just about everything can be configured using a bluetooth app, and configurations saved in custom presets. First, some...

Fun question. Assuming the battery was fully charged when it was parked (unlikely) and supplied a 15-25mA draw for a month, it needs 10-20Ah. At minimum charge current, that's 30-60 hours. That would be worst case, except... It depends on whether you can do something to increase the battery...

Desulfation is a marketing term. Nobody can define it precisely but every manufacturer has to do it now. It usually amounts to holding a battery at a voltage high enough to shorten its life, in hopes of turning some hard lead sulfate and water back to lead, lead dioxide and sulfuric acid...

I started looking at the Battery Tender because I could hear a coil whine, every 10-15 seconds, from across the garage after an overnight maintenance session. With a multimeter on the battery I watched it shoot up to 13.55V and slowly fall to 13.35V every ~13 seconds. I'm revisiting this today...

IMO, these things are a last resort before recycling the battery. Any mode that's trying to do something that ordinary charging can't is going to be hard on a battery.

IMO it's a one-size-fits all device that doesn't fit anyone well. For maintaining a lead acid battery in a car that tends to undercharge or isn't driven often, the Genius 10 is an expensive one-third amp trickle charger that may not ever fully charge the battery. Same goes for the guy who...

It's a maintenance free design. No fill caps. This battery regularly receives a full charge. Not a Noco solid green light full charge, a real one. The only way to know that a battery is done charging when you can't access the electrolyte is to hold it at constant voltage until current stops...

Can the Noco Genius 10, with its 0.32A minimum charging current, every fully charge a smaller aging battery? I'm used to seeing current taper down to one-tenth of that, 0.03A, or lower, in constant voltage charging. With that question in mind, I gave the Noco Genius 10 one more chance before...

I gave the Noco Genius 10 another shot, hoping to see it output more than 3.2% of its rated current in my normal use. Spoiler: It didn't. This time the JT had been parked for 8 full days since last driven, untouched except to open the hood on day 5. I expected the Noco would charge at 3.3A or...

It's not quite the same, unless the charger is small. A standard bulk-absorption 10A charger will bring a car battery (used normally, not deliberately discharged) up to 14.4V in seconds, ending the bulk stage. Most of the charging will then happen in absorption at 14.4V. A 1A charger might...

I like Noco's algorithm. Constant-current charging can be gentle on a battery, with only a brief period of high voltage at the end of the cycle. The charger behaves perfectly in that regard. My main problem is the AGM profile on the NG10. It appears to be set for 14.8V at standard temperature...

Mods changed the title. I find the new on pretentious. @ShadowsPapa That's not at all what Noco does. Noco doesn't do constant voltage absorption or float. It's basically 6 bulk stages, each at lower current and higher ending voltage. Its maintenance mode is either off or supplying 0.32A...