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JohnnieB · 10-01-2013, 07:52 AM

The TD-II charger is fairly rare and not much info is floating around on them.

From what I can tell from the photos you posted, the "Charge Complete" light and the "Off - Reset" button are missing and the digital display isn't on.

The digital display displayed elapsed time, error messages and when the button was held in, it displayed the output voltage, but none of those effect the basic battery charging function, so it doesn't matter if it works or not.

You say the ammeter went to 15A, so the basic charger part is working. (Starting at 15A is a bit low, but output Amps depends on pack voltage and other factors)

The TC-II is a Ferroresonant Transformer design charger, so there is little danger of overcharging the batteries with it, even if it doesn't shut off automatically like it should and the backup timer is defective or disabled.

When the charger first comes on, it is current limited to about 18-20 Amps and as the battery pack's On-Charge voltage increases, the Amps decrease, eventually getting down in the 2A range as the On-Charge voltage climbs into the 44-46V range, where the charger automatically shuts off.

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As for the 50A circuit breaker, pushing it will feel like pushing against a spring unless it has been tripped, then you'll feel a click as it resets.

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Also, you mentioned you topped of the batteries and then put them on charger. That's not the way to do it.
If the plates are exposed, add just enough water (Distilled water only) to cover the plates. Charge batteries fully and then fill to proper level.
When you add water to partially discharged batteries, they are likely to overflow while charging.

10-01-2013, 07:52 AM	#2
JohnnieB Techno-Nerd Join Date: Jun 2011 Location: West Virginia Posts: 19,654	Re: Total Charge ll I.D. The TD-II charger is fairly rare and not much info is floating around on them. From what I can tell from the photos you posted, the "Charge Complete" light and the "Off - Reset" button are missing and the digital display isn't on. The digital display displayed elapsed time, error messages and when the button was held in, it displayed the output voltage, but none of those effect the basic battery charging function, so it doesn't matter if it works or not. You say the ammeter went to 15A, so the basic charger part is working. (Starting at 15A is a bit low, but output Amps depends on pack voltage and other factors) The TC-II is a Ferroresonant Transformer design charger, so there is little danger of overcharging the batteries with it, even if it doesn't shut off automatically like it should and the backup timer is defective or disabled. When the charger first comes on, it is current limited to about 18-20 Amps and as the battery pack's On-Charge voltage increases, the Amps decrease, eventually getting down in the 2A range as the On-Charge voltage climbs into the 44-46V range, where the charger automatically shuts off. ------- As for the 50A circuit breaker, pushing it will feel like pushing against a spring unless it has been tripped, then you'll feel a click as it resets. ---------- Also, you mentioned you topped of the batteries and then put them on charger. That's not the way to do it. If the plates are exposed, add just enough water (Distilled water only) to cover the plates. Charge batteries fully and then fill to proper level. When you add water to partially discharged batteries, they are likely to overflow while charging.