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Questions tagged [battery]

Questions regarding devices used to store energy for a duration of time.

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Would Li-Ion batteries for a lunar base energy storage system be transported to the base charged or uncharged?

I'm investigating lunar base power systems and energy storage systems (ESS). One option is photovoltaics (PV) and Li-Ion batteries. A large mass of batteries would be required to power the base during ...
nwsteg's user avatar
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3 votes
0 answers
90 views

Cold-tolerant Mars electronics

For humans Mars isn't cold: there is little atmosphere to remove the waste heat from metabolism and life support equipment. But for electronics lacking an RTG, heat loss is a problem. Ingenuity, being ...
Kevin Kostlan's user avatar
2 votes
0 answers
133 views

Ion propulsion system [duplicate]

Good evening. Is there a formulae to calculate how much lift an ion propulsion system would create on earth, given factors like voltage, load, etcetera? Just a mathematical formulae. That is all I ask ...
Devon Shire's user avatar
2 votes
2 answers
879 views

JWST - batteries?

I am interested in how batteries might be used on the JWST. A few questions come to mind: Does the JWST have onboard batteries? If so, What kind of batteries are they? Are they rechargeable? If ...
Bruce Simonson's user avatar
1 vote
0 answers
251 views

Do operational Starlink satellites run their ion engines at night on batteries? And if so, do they have hi/low settings?

Discussion below What is the maximum thrust of the Starlink satellites? raise the question of the Starlink communications satellites' power budget and use of their ion thruster in daylight when the ...
uhoh's user avatar
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3 votes
2 answers
161 views

What type of battery technology does Mars Odyssey use?

The Mars Odyssey orbiter is currently the longest-serving spacecraft at Mars. Launched and put into service in 2001, it continues to take infrared pictures and gamma-ray spectra of the Martian ...
DrSheldon's user avatar
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27 votes
3 answers
8k views

Why exactly do robots freeze? How could we engineer around it?

Moon and Mars rovers go through a lot of trouble to keep themselves heated to avoid "freezing to death". My question is why exactly are all these measures necessary? As in, which components ...
VIBrunazo's user avatar
  • 495
0 votes
1 answer
45 views

What secondary science payloads deployed from primary science payloads were strictly battery powered?

When is the last time that a battery-powered spacecraft was launched without an RTG or solar-electric power? had to be refined a few times because the use of battery-only power is much more widespread ...
uhoh's user avatar
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9 votes
1 answer
296 views

When is the last time that a battery-powered spacecraft was launched without an RTG or solar-electric power?

Except for special sun-synchronous, Earth orbit eventually leads to eclipses, so spacecraft in Earth orbit generally have solar panels with electrical energy "buffered" by batteries. And ...
uhoh's user avatar
  • 148k
2 votes
2 answers
251 views

Has anyone developed a reliable deep space battery that doesn't need to be kept warm?

Has anyone developed a reliable battery for use in cold deep space applications? Something that doesn't need to be kept warm? For exampe lithium batteries certainly has its constraints due to the ...
SpacSpace's user avatar
5 votes
0 answers
484 views

How many kilograms of nickel particles will be dispersed in Earth's atmosphere by dumping old ISS batteries overboard?

update: CNN's November 7, 2023 Japanese scientists want to send a wooden satellite into space links to October 16, 2023 NOAA scientists link exotic metal particles in the upper atmosphere to rockets, ...
uhoh's user avatar
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8 votes
1 answer
1k views

What is the mass of the Electron rocket's battery pack?

I am trying to estimate battery weights for electric pump fed rockets of various sizes and wanted to use the electron rocket as data to validate my calculations. However I was unable to find the mass ...
Ruben's user avatar
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5 votes
0 answers
124 views

Electrical power requirements for Starship or Falcon 9

Anybody know where one could dig up electrical requirements for Starship? In other words, if Starship were sitting on the launch pad drawing power prior to launch, what would the load be? I imagine ...
ijnabe47's user avatar
2 votes
0 answers
119 views

At what inclined grade would Curiosity or Perseverance require twice the electrical power to drive compared to driving on flat terrain?

Motors have losses and friction, and compaction of soil by a rovers wheels are lossy as well. Driving over bumps/topography requires extra work going up that isn't recovered when going back down. The ...
uhoh's user avatar
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5 votes
1 answer
487 views

How are the Curiosity rover's batteries doing after all these years (and all these cycles)? Have they degraded significantly?

Curiosity has spent 2820 sols on Mars and this answer to About how long will Curiosity last on its nuclear power? points out that its batteries may wear out faster than its RTG. Question: How are ...
uhoh's user avatar
  • 148k
2 votes
1 answer
214 views

Most efficient method of storing energy with water on the moon?

I found a large cavern under my lunar homestead. It is several hundred feet (a couple hundred meters) deep and fairly large. There is a large ice deposit at the bottom. I am able to warm it to ...
James Jenkins's user avatar
2 votes
0 answers
193 views

What are the power specifications for Curiosity's 6 driving motors and the voltages of the two batteries, and what are the sources?

To calculate the maximum travel time for Curiosity without recharging its batteries, I would like to know the power specifications for its driving motors. And we need to know how much energy can be ...
Cornelis's user avatar
  • 7,535
1 vote
1 answer
98 views

How many discharge cycles do ISS and other LEO satellites withstand? What specific things are done to make this possible?

Batteries in our laptops and phones eventually wear out after thousands or tens of thousands of discharge cycles over the lifetime of the product, maybe a cycle ever few days. The ISS and other ...
uhoh's user avatar
  • 148k
9 votes
1 answer
717 views

How much silver was left on the Moon by Apollo Lunar Modules?

Both the descent and ascent stages of the Apollo Lunar Module were powered by silver-zinc batteries. Source: Apollo Lunar Module Electrical Power System Overview The total weight of these batteries ...
Uwe's user avatar
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12 votes
3 answers
1k views

Is the risk of explosion-induced damage to operational spacecraft in GEO actually reduced substantially by raising Spaceway-1 by 300 km?

Engadget: DirecTV satellite is at risk of explosion due to battery issues Space News: DirecTV fears explosion risk from satellite with damaged battery say that the spacecraft must move 300 km above ...
uhoh's user avatar
  • 148k
3 votes
1 answer
386 views

How many "main" batteries does the ISS have? How many are still nickel-hydrogen?

CBS News's Third all-female spacewalk completes job of swapping out batteries says: NASA is in the process of replacing 48 older-generation nickel-hydrogen batteries in the station's solar power ...
uhoh's user avatar
  • 148k
2 votes
0 answers
82 views

What is the calculation for the distance VIPER can travel without recharging its batteries?

VIPER, the lunar rover NASA has developed to search for water in the permanently shadowed regions near the south pole of our Moon, will be equipped with (rechargeable) batteries to be able to drive, ...
Cornelis's user avatar
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4 votes
2 answers
1k views

Why can't the VIPER lunar rover recharge its 100-day power source using its solar panels?

update 1: NASA wants ideas for keeping Moon missions powered in the dark update 2: NASA’s Artemis Rover to Land Near Nobile Region of Moon’s South Pole which is informative here Source NASA ...
uhoh's user avatar
  • 148k
2 votes
1 answer
1k views

Do Phonesats and GoPros work with their internal batteries in space vacuum?

After reading the question OTS rechargeable battery for a lunar rover I wondered about examples of OTS (off-the-shelf) batteries in space. There has been at least one cellphone-based satellite, and ...
uhoh's user avatar
  • 148k
2 votes
0 answers
129 views

OTS rechargeable battery for a lunar rover

I've been playing around with ideas for an open source lunar rover. It's based on the Stanford Doggo (video) robot. Are there commercial off-the-shelf rechargeable batteries that might work for such ...
Mike O'Sullivan's user avatar
18 votes
2 answers
3k views

Are lithium batteries allowed in the International Space Station?

Lithium batteries have been restricted or forbidden on aircraft in some jurisdictions, after incidents of fires. Are lithium batteries allowed on the ISS? If so, why would the risk be considered ...
DrSheldon's user avatar
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7 votes
1 answer
542 views

Are LiPo batteries more suitable for 1st stage electric power than Li-ion batteries?

I've just ran across two mentions in Scott Manley's videos of LiPo batteries (Lithium-polymer) in first stage launch applications. These involve power levels of megawatts. Why The Electron Rocket May ...
uhoh's user avatar
  • 148k
10 votes
1 answer
976 views

Are the ejected first stage Electron rocket batteries really incinerated?

This answer reminded me that the Electron rocket drops one of it's batteries when it is mostly spent. We might call that "micro-staging". This answer quotes Spaceflight 101: With a low auto-...
uhoh's user avatar
  • 148k
12 votes
3 answers
4k views

Rocket flywheel instead of battery/generator (crazy idea)?

The Electron rocket is launched using a battery instead of generator... I saw some video about research into using flywheels for energy grid buffer storage, I think that they could reach higher ...
Alonda's user avatar
  • 499
1 vote
1 answer
349 views

Does the Falcon 9 charge its batteries during flight?

I'm wondering if the Falcon 9 booster or upper stage regenerates any electrical power from the Merlin engines or their subsystems, or if the battery systems are perpetually draining while in flight (...
Ehryk's user avatar
  • 493
1 vote
0 answers
99 views

Use or tests of multimode optical fiber for cubesat battery charging or datalink while in storage, or waiting to launch?

the idea of POF or power over fiber is to couple a moderate amount of solid state laser light, say a few hundred milliWatts or even several Watts (or potentially more, but it gets more challenging), ...
uhoh's user avatar
  • 148k
1 vote
1 answer
211 views

power system redundancy in launch vehicles

Is the power supply system redundant in launch vehicles? If so, how is it achieved? For example, is there redundancy at the battery pack level or converter level? How much battery packs will there be,...
HEMARAJ J's user avatar
5 votes
2 answers
760 views

How much wax is on the Moon? (Lunar Roving Vehicles)

I found the Cody's Lab videos from Scott Manley's video as described in this answer. Browsing through I learned from the first 30 seconds of Hot Wax Bottle? that the phase change of wax was used on ...
uhoh's user avatar
  • 148k
3 votes
1 answer
707 views

Would a lower LEO ISS orbit really have a shorter eclipse duration than a higher one?

This comment says Lower orbit also mean shorter ones; for observations (one of the ISS missions) it is an advantage. It also have shorter night times (ie smaller batteries).. and the likely ...
uhoh's user avatar
  • 148k
38 votes
1 answer
8k views

What was ejected from RocketLab's Electron launch vehicle at T+6:25 during stage two burn?

For those that watched the second launch of RocketLab's Electron launch vehicle, out of Mahia Peninsula, New Zealand on 21 January 2018; in which the vehicle successfully made it to orbit for the ...
marked-down's user avatar
  • 8,961
24 votes
4 answers
14k views

Why aren't batteries used in space?

Like why use RTGs (Radioisotope thermoelectric generator) to power small spacecraft instead of just placing batteries inside them to power stuff?
max's user avatar
  • 357
2 votes
1 answer
220 views

Can Li-ion batteries replace parts of the physical structure of a spacecraft, such as the hull of a crewed spaceship?

Batteries contain metals with some structural rigidity themselves, and need encapsulation anyway. Could the batteries a spacecraft needs be used to build part of the physical structure, such as the ...
LocalFluff's user avatar
7 votes
1 answer
478 views

Will the CST-100 recharge its batteries?

Since the CTS-100 uses lithium-ion batteries to supply its electrical power, and lithium-ion batteries self-discharge over time, will the CST-100 need to recharge its batteries at the ISS? If so how ...
ForgeMonkey's user avatar
  • 7,129
6 votes
1 answer
509 views

What is the proper way to charge Lithium Ion batteries?

Lithium Ion Batteries are becoming more and more popular in spacecraft, due to their high power per mass ratio. There are several companies, such as Quallion, advertising their space rated batteries. ...
PearsonArtPhoto's user avatar
  • 121k