CFlyer-MI Posted March 15, 2021 Report Posted March 15, 2021 Does anyone know what the venting requirements are for GI-275 because it has an internal battery? Do you have to pipe it outside the airplane? Quote
GeeBee Posted March 15, 2021 Report Posted March 15, 2021 There are no venting requirements. It is a sealed unit. 1 Quote
OR75 Posted March 15, 2021 Report Posted March 15, 2021 7 hours ago, CFlyer-MI said: Does anyone know what the venting requirements are for GI-275 because it has an internal battery? Do you have to pipe it outside the airplane? where did you see a venting requirement ? Quote
carusoam Posted March 16, 2021 Report Posted March 16, 2021 Welcome aboard CF... What makes you think there would be a venting requirement? Best regards, -a- 1 Quote
OR75 Posted March 16, 2021 Report Posted March 16, 2021 Let’s clarify something here .... connecting to a pitot static is NOT for venting ! 1 Quote
louisut Posted March 16, 2021 Report Posted March 16, 2021 (edited) On 3/15/2021 at 6:58 AM, CFlyer-MI said: Does anyone know what the venting requirements are for GI-275 because it has an internal battery? Do you have to pipe it outside the airplane? The battery chemistry isn't the same as your ship battery. Those are typically lead acid and require venting because they produce hydrogen when they're charged. Batteries for small electronics (like the GI 275) are typically NiMH or Li-ion. Like your phone, they are are sealed and have no venting requirements. Edited March 16, 2021 by louisut 1 Quote
StevenL757 Posted March 16, 2021 Report Posted March 16, 2021 On 3/15/2021 at 7:58 AM, CFlyer-MI said: Does anyone know what the venting requirements are for GI-275 because it has an internal battery? Do you have to pipe it outside the airplane? There are no venting requirements...to which @GeeBeeand others have alluded. I confirmed same earlier this morning with my shop. 1 1 Quote
CFlyer-MI Posted March 16, 2021 Author Report Posted March 16, 2021 Thanks everyone for the info. I appreciate it. I just saw it had an internal battery and wondered about the battery overheating and causing gas/fumes. Quote
PeteMc Posted March 16, 2021 Report Posted March 16, 2021 It's sealed. Like your cell phone or computer. Quote
CFlyer-MI Posted March 18, 2021 Author Report Posted March 18, 2021 Folks I just spoke with a dealer and they said the GI-275 Battery is TSO 179b Class A-2C. So it doesn’t require venting but the “C” means the unit doesn’t contain the emissions and it can exhaust gases/fumes if the battery enters a thermal runaway state. 1 Quote
V1VRV2 Posted March 19, 2021 Report Posted March 19, 2021 The battery in the GI275 isn’t on a charger so how can thermal runaway occur? Quote
carusoam Posted March 19, 2021 Report Posted March 19, 2021 25 minutes ago, V1VRV2 said: The battery in the GI275 isn’t on a charger so how can thermal runaway occur? great question... Tried looking for an answer... https://buy.garmin.com/en-US/US/p/719027#specs As far as I can tell... the battery pack can be used while sitting in the hangar... It has a power monitor... I assume it is getting power insitu... Soo... 1) it’s a constantly, smart charging system... when power is available... 2) Any battery can short... leading to thermal runaway... 3) High rates of discharge, or high rates of charging can be bad... 4) I don’t see it being very user friendly if the battery comes out every time it needs to be charged... Starting an IFR trip on anything less than 100% would get more involved... What a marvelously complex device... -a- 1 Quote
PeteMc Posted March 19, 2021 Report Posted March 19, 2021 5 hours ago, V1VRV2 said: The battery in the GI275 isn’t on a charger so how can thermal runaway occur? The battery is not a pre-charged pack that is good for X months like your ELT. It is connected to power and does charge, so there is always a possibility the unit or the batter sensors will have issues and over charge. 1 1 Quote
GeeBee Posted March 19, 2021 Report Posted March 19, 2021 Always a possibility but rare. Nor is thermal runaway confined to charging. It can happen with rapid discharge too. The last smoking tablet I had was an MS Surface at about 35W. Was not hooked to a charger, but it entered "spinning ball" mode and ended up toast. The GI-275 is like the Anker battery packs, it charges at a very low rate. Because 99% of the time it uses ships power for primary sustenance hard or rapid charging is not necessary. 1 Quote
PeteMc Posted March 19, 2021 Report Posted March 19, 2021 Yep. But you know it has to have the vent and the warning. Where would we be without our Gov. Warnings! Quote
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