# 12 volt capacity for Gem 2016-2019
**URL:** https://community.electricforum.com/t/12-volt-capacity-for-gem-2016-2019/24962
**Category:** GEM Forum
**Created:** [August 21, 2022, 10:04pm UTC](https://community.electricforum.com/t/12-volt-capacity-for-gem-2016-2019/24962 "2022-08-21T22:04:33Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@MrAir1](https://community.electricforum.com/u/MrAir1)
#### Post date: [August 21, 2022, 10:04pm UTC](https://community.electricforum.com/t/12-volt-capacity-for-gem-2016-2019/24962/1 "2022-08-21T22:04:33Z")
Adding 12 volt accessories to a GEM uses amperage that is supplied by the dc/dc converter. I am wondering what is the max. amperage that can be expected for that converter?
When adding a massive radio system is it best to have a separate high voltage to 12 v. dc/dc converter connected to the main battery pack?
My current system will all lights and radio can get close to 40 amps.
I have stayed way below this because I don’t know what my limit is.
Adding radio amplifiers will make this worse.
I do not see this answer in the Service Manual. If you do please tell me the page.
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### Author:  [@MikeKC](https://community.electricforum.com/u/MikeKC)
#### Post date: [August 21, 2022, 10:17pm UTC](https://community.electricforum.com/t/12-volt-capacity-for-gem-2016-2019/24962/2 "2022-08-21T22:17:20Z")
I don’t know that I would push the Delta Q to 30amps continuous but they state you can.
I personally would install a second DC/DC converter for the stereo.
| **DC Output** | **48 VDC** | **72 VDC** |
| --- | --- | --- |
| Maximum DC output power | 1000 W | 1000 W |
| Maximum DC output current | 18 A | 12 A |
| — | | |
| **Converter DC Output** | | |
| No-load power draw | \< 0.7 W | \< 0.7 W |
| Battery DC input voltage range | 35-87 V | 50-130 V |
| DC output voltage | 13.5 +/- 0.7V | |
| Continuous / peak output current | 30 A / 60 A | |
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### Author:  [@Inwo](https://community.electricforum.com/u/Inwo)
#### Post date: [August 21, 2022, 10:43pm UTC](https://community.electricforum.com/t/12-volt-capacity-for-gem-2016-2019/24962/3 "2022-08-21T22:43:29Z")
300 watts or 300/14 amps.
Buffered by the parallel connected aux battery.
No reason you could not use a larger battery or converter.
Or add one for accessories.
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### Author:  [@MrAir1](https://community.electricforum.com/u/MrAir1)
#### Post date: [August 22, 2022, 8:04pm UTC](https://community.electricforum.com/t/12-volt-capacity-for-gem-2016-2019/24962/4 "2022-08-22T20:04:23Z")
Thank you all for this data. It is easy to add an additional dc/dc converter to protect the onboard system.
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### Author:  [@Rixpix](https://community.electricforum.com/u/Rixpix)
#### Post date: [August 28, 2022, 7:34pm UTC](https://community.electricforum.com/t/12-volt-capacity-for-gem-2016-2019/24962/5 "2022-08-28T19:34:52Z")
Could you tell me which wires to connect the second converter to so that the ignition shuts off all power?
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### Author:  [@LithiumGods](https://community.electricforum.com/u/LithiumGods)
#### Post date: [August 29, 2022, 12:39am UTC](https://community.electricforum.com/t/12-volt-capacity-for-gem-2016-2019/24962/6 "2022-08-29T00:39:02Z")
If your Gem has a stand alone Dc converter, You can add a second converter by switching to a Deltaq with a built in dc converter.