Battery Chargers

What's the issue?

Reading the posts I see I am not alone. First, as mentioned, it won't charge a dead battery as it has to sense voltage. So if I have a dead battery I have to pull the same trick as mentioned of temporarily paralleling another battery to get it to start charging. Then before the battery is fully charged it starts this "ON-OFF" dance. And the frosting on the cake is, as mentioned, I can't use it as a power source to test wiper motors, fan motors, etc. And it's not just chargers. We were going to unload a car using my electric winch. One of my friends said he'd use his jump box to run the winch rather than back a vehicle up. No go. We ended up hooking up the pickup battery to unload. The old days were so much simpler when a charger was a transformer, a rectifier, an ammeter, a switch, and some cables. That is what I am looking for.