kosie_sparks
New Member
Our complex with 44 units has an electric sliding gate, running off a built-in 24V battery (2 x 7Ah 12V) which is kept charged at a rate of 0,5A from the mains power supply. However, these batteries only lasts 4 - 6 hours in the event of a power failure. We would like a backup period of at least 12 hours, but the motor housing does not allow installing physically larger batteries. Since the gate battery charger also powers the gate motor control circuits, switches, sensors and remote control activating devices, it is not possible to just disconnect its own built-in batteries and to connect it to an external battery supply.
We also have 2 x 100Ah 12V batteries (also charged from the mains power supply) within a few meters from the gate, for emergency lighting at the gate, as well as backup for an electric security fence. We would like these batteries to also power the gate during extended power failures. Power failures often happens early evening, and the gate batteries are depleted at an awkward time at night, when the gate have to be unlocked and left in the open position until mains supply power is restored. During this period, the security in the complex is non-existent as anyone may then enter the premises.
Will the motor's charging circuit blow out if this larger 2 x 100Ah battery backup is charged at a rate of 1 to 1,5A when the mains power supply is restored? Is their some kind of limiting device that can be added at the small batteries, to prevent its own built-in charger and the rest of its electronics, from being overloaded or fried by the charger for the much larger batteries?
The supplier of the gate motor refuses to co-operate in helping us with advice on how to prevent the gate motor's re-charging electronics, to be overloaded by the main battery backup while it is being recharged. They have all sorts of stories of not disclosing their design to the public, or that it is not built for working in conjunction with a more powerful charging system etc. etc.
We also have 2 x 100Ah 12V batteries (also charged from the mains power supply) within a few meters from the gate, for emergency lighting at the gate, as well as backup for an electric security fence. We would like these batteries to also power the gate during extended power failures. Power failures often happens early evening, and the gate batteries are depleted at an awkward time at night, when the gate have to be unlocked and left in the open position until mains supply power is restored. During this period, the security in the complex is non-existent as anyone may then enter the premises.
Will the motor's charging circuit blow out if this larger 2 x 100Ah battery backup is charged at a rate of 1 to 1,5A when the mains power supply is restored? Is their some kind of limiting device that can be added at the small batteries, to prevent its own built-in charger and the rest of its electronics, from being overloaded or fried by the charger for the much larger batteries?
The supplier of the gate motor refuses to co-operate in helping us with advice on how to prevent the gate motor's re-charging electronics, to be overloaded by the main battery backup while it is being recharged. They have all sorts of stories of not disclosing their design to the public, or that it is not built for working in conjunction with a more powerful charging system etc. etc.
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