Battery Panasonic or Bosch

I noticed that between 4ah and 5ah battery is little difference, but not much, 15% i would say. BUT 5.5 procore seems like 50% better than 4AH bosch battery and at least 15-20% stronger than bosch 5AH battery. When i say stronger, it is noticable in speed,strenght when i cut pellets, or drill concrete, or doing some 100mm or larger screws.

I had a 2004 Scion xb back in the day that was made in Japan. Had to get rid of it after the engine developed excessive oil consumption. Had a hell of a battery in it. Panasonic brand.

I used euro car parts 444770127 which is a mid range bosch battery. Don't remember any issues

Bosch, m-a tinut 8ani. Acum tot bosch de 70/75am luat.

Yeah, the oem Panasonic battery is easy to kill. I replaced mine (2022 Turbo) with an AGM type. Most all batteries are made by Johnson Controls, under different names. The cheapest price I found was $179 with a 4 year warranty at Walmart. Everstart Platinum group 35. Was a 10 min job to remove and replace. They can even test your old one. The agm type is in the deep cycle family, it can be discharged quite a bit without any issues, the stock battery (flooded acid type) is easy to damage.

My 2019 Mazda 3 died on me randomly a couple months ago. The dealership ran a test on it and it came out fine. I changed it anyway as it was a stock 5 year old battery. It’s been fine since, even in the -20°C temps where I am.

The mechanic I go to gives me Bosch and they last around 2 years if not more. But then they do die within a day when they do.

Bosch - 2.5 years so far,

Varta - 1.3 years before dying

It was a P.O.S. Panasonic battery that is known to die prematurely. Only had 28k miles on the car when it died and had to get it replaced.

I bought a brand new Bosch battery last year ( not Halfords)and when I checked the voltage it was less than 10 volts so there are dud batteries out there.