Is it possible to Ippon Back Power Pro 500/600 connect AGM-battery capacity 100Ач
Yeah, maybe.
Do I understand correctly, the characteristics of the UPS (battery) is determined solely by the capacity of the battery?
No, wrong. The battery life also depends on the connected load. With a small load on the UPS will last not for minutes and hours and more.
On this basis, it is calculated what the average time for a home computer (3-5 minutes.) and displays load, which can be connected to the UPS has provided the estimated time
Decisive here is the original purpose of the UPS. The most part familiar to us UPS is designed to give the user time to save work in progress. Conventionally, it is believed that 3...5 minutes it is enough, and that the conditional average computer monitor consumes no more than 500 watts. From here, you select the capacity.
With the power of this UPS issue is more complex. These same 500 watt is the power that it can provide
for most of these 3...5 minutes. If you connect a battery with a larger capacity, then the user may consider extend this and make a mistake, because on a full-time capacity for a period exceeding the standard, the inverter UPS is a decent warm up. This is evident even in their small size transformer and radiators key, if you take it apart and see.
That's why the author of the previous answer and wrote that I would need forced cooling, which is not in the original design. And I will add that it should be powerful enough. This will be the necessary alteration.
internal charger designed for charging that is installed capacity. From this we can conclude that to connect an external battery pack nedostroen.
Not quite. It is considered that the maximum battery life is achieved by charging-up current of 0.1 C. the charge lasts 14...15 hours. If you connect a battery with a larger capacity, the charging time will increase from 15 hours in proportion to capacity. Other nuances there.
However, if you agree to charge manually, you can use any other charging mode (including a fast charging mode high current for gel working. frustrating), but for the health of the battery then will not answer the regular charger, and you.
do I need to connect the battery through the diode...Can such a scheme to damage the charger of the UPS?
It is highly desirable diode is not put because it you will lose a substantial part of the energy of the battery, due to voltage drop on it. Even if it is a Schottky diode with a drop of 0.2 volts, at a current of 20...30 amps (which is typical the discharge current of the battery in the UPS) to the diode will dissipate a 4...6 a watt, and it will require the radiator. And as with conventional silicon - and all the watts 15.
Damage to the charger when you connect a bigger battery is not going to happen - he will have to work longer, but it is designed for long-term work.
is it possible to connect, for example, 1000W, namely whether it is safe for the UPS?
You can't do that. Even at normal power for longer work you will need additional cooling, and while most likely trigger overload protection or (if not) the smoke will appear. For more power it is better to buy a more powerful UPS.