Personally, I would keep them separate. I have the “Battery Tenders” to keep my unattended battery’s from going belly up and I have a 50-10-2 amp charger for general charging and boosting. The 50 amp boost has saved me countless times. I usually charge for 10-20 minutes on 10 amps, then switch it 50 amps to crank her over. The 50 amp boost is only good for about 15-20 seconds of cranking before you hit its duty cycle.
I have a Sears brand for thirty years, still going but its a manual charger, meaning it needs to be attended or you can cook your battery, if you don’t keep an eye on it. Three years ago, I bought a HF 50-10-2 automatic charger that I bought on sale for for thirty dollars. Only time will tell if it was a good buy.
One more thing about automatic chargers. They will not charge a totally dead battery. Their circuit board needs to sense voltage from the battery in order to kick on their charging circuit. Thats why I keep my old Sears manual charger.
Just my thoughts!
