TUNZE Safety Connector
- Thread starter Coronus
- Start date
- Tagged users None
mcarroll
10K Club member
I dunno if he can supply customer photos 
but I wonder if @rvitko has any idea on suggested battery size/types? Or perhaps @Brew12?
I've had some recent losses due to a power outage for the first time ever, so I'm looking at getting something. I run a pair of 6095's, but I suspect we'd need a similar setup.
but I wonder if @rvitko has any idea on suggested battery size/types? Or perhaps @Brew12?I've had some recent losses due to a power outage for the first time ever, so I'm looking at getting something. I run a pair of 6095's, but I suspect we'd need a similar setup.
Brew12
Electrical Gru
Someone else posted a picture of their setup.
https://www.reef2reef.com/threads/tunze-safety-connector.253957/#post-2997930
Normally for battery backup systems I recommend trolling motor batteries. In this case, that would be overkill and would power your pumps for weeks. A smaller battery can be used. If you want to try and calculate run time you will need to get the power draw for the pump in emergency mode. For DC, 1 watt = 1 volt x 1 amp. If it is a 12V pump and uses 12 watts it will pull 1 amp of current. This means a 200 amp hour battery will last for 200 hours in theory.
https://www.reef2reef.com/threads/tunze-safety-connector.253957/#post-2997930
Normally for battery backup systems I recommend trolling motor batteries. In this case, that would be overkill and would power your pumps for weeks. A smaller battery can be used. If you want to try and calculate run time you will need to get the power draw for the pump in emergency mode. For DC, 1 watt = 1 volt x 1 amp. If it is a 12V pump and uses 12 watts it will pull 1 amp of current. This means a 200 amp hour battery will last for 200 hours in theory.
mcarroll
10K Club member
I ran into these on the same search.....are these in the right class of batteries? Around 30 amp-hours seems like a pretty good deal for what I have in mind.
Universal UB121000-45978 12v 100AH Deep Cycle AGM Battery 12V 24V 48V(Black)
by Universal Power Group
$ 168 99
ExpertPower 12v 33ah Rechargeable Deep Cycle Battery [EXP12330] Replaces 34Ah, 35Ah, 36Ah
by ExpertPower
$ 68 12
ML35-12 - 12V 35AH U1 Deep Cycle AGM Solar Battery Replaces 33Ah, 34Ah, 36Ah - Mighty Max Battery brand product
by Mighty Max Battery
$ 63
Universal UB121000-45978 12v 100AH Deep Cycle AGM Battery 12V 24V 48V(Black)
by Universal Power Group
$ 168 99
ExpertPower 12v 33ah Rechargeable Deep Cycle Battery [EXP12330] Replaces 34Ah, 35Ah, 36Ah
by ExpertPower
$ 68 12
ML35-12 - 12V 35AH U1 Deep Cycle AGM Solar Battery Replaces 33Ah, 34Ah, 36Ah - Mighty Max Battery brand product
by Mighty Max Battery
$ 63
As an Amazon Associate we earn from qualifying purchases.
OP
OP
Coronus
Valuable Member
Thanks for posting that pic. I have seen that one before. Most of the cords are not hooked up though. Looking for somthing more complete.
Brew12
Electrical Gru
Yup, deep cycle batteries are exactly what you are looking for. As opposed to cranking batteries that are designed for high current for short periods of time.I ran into these on the same search.....are these in the right class of batteries? Around 30 amp-hours seems like a pretty good deal for what I have in mind.
Universal UB121000-45978 12v 100AH Deep Cycle AGM Battery 12V 24V 48V(Black)
by Universal Power Group
$ 168 99
ExpertPower 12v 33ah Rechargeable Deep Cycle Battery [EXP12330] Replaces 34Ah, 35Ah, 36Ah
by ExpertPower
$ 68 12
ML35-12 - 12V 35AH U1 Deep Cycle AGM Solar Battery Replaces 33Ah, 34Ah, 36Ah - Mighty Max Battery brand product
by Mighty Max Battery
$ 63
As an Amazon Associate we earn from qualifying purchases.
Brew12
Electrical Gru
That is mostly complete. Red wire from the positive of the battery to the red wire on the unit. Black wire from the negative of the battery to the black wire on the unit. The original power supply plugs into the unit and the unit plugs into the controller. Unfortunately, I don't have these things so I can't take a picture for you.
Brew12
Electrical Gru
SLA is Sealed Lead Acid. You can get deep cycle and starter batteries like this. For indoor use I would go with SLA or AGM batteries. You don't want vented batteries indoors.
Brew12
Electrical Gru
I believe that all AGM batteries are sealed. I would expect any that are not sealed would have a special designation if they do exist but they would be very uncommon.
Brew12
Electrical Gru
Yes, these are all sealed. Key things to look for are being designated as "leak proof", "SLA" (sealed led acid) or "valve regulated".
Yup, it should automatically kick over. What I don't know is if it goes into a low power mode when on battery power. Just not too familiar with this specific product.
Brew12
Electrical Gru
I noticed that you could hook up a 24V battery to it. Would it still go to a lower power mode in this case?
OP
OP
Coronus
Valuable Member
I just figured something out on my Ecotech Battery backups that means I wont need the tunze safety connector now.
Unreal! I almost just spent a ton of money for no reason!
Unreal! I almost just spent a ton of money for no reason!
Brew12
Electrical Gru
