I read that WW2 submarines ad to surface to recharge their batteries. How were the batteries recharged? - Quora
![A secret WW2 German U-boat base, Nazis on the run, macabre facilities for facial reconstruction surgery – the shady past of Spain's Fuerteventura - Olive Press News Spain A secret WW2 German U-boat base, Nazis on the run, macabre facilities for facial reconstruction surgery – the shady past of Spain's Fuerteventura - Olive Press News Spain](https://www.theolivepress.es/wp-content/uploads/2020/05/The-alleged-U-boat-batteries-Photograph_-Karina-Siba-scaled.jpg)
A secret WW2 German U-boat base, Nazis on the run, macabre facilities for facial reconstruction surgery – the shady past of Spain's Fuerteventura - Olive Press News Spain
![German Industries and the U-boat offensive - Technical pages - German U-boats of WWII - Kriegsmarine - uboat.net German Industries and the U-boat offensive - Technical pages - German U-boats of WWII - Kriegsmarine - uboat.net](https://uboat.net/media/photos/industries_accu.jpg)
German Industries and the U-boat offensive - Technical pages - German U-boats of WWII - Kriegsmarine - uboat.net
![Submarine Battery Bank shorted.Initially called ball lightning, now Leidenfrost Effect. August 1994 - YouTube Submarine Battery Bank shorted.Initially called ball lightning, now Leidenfrost Effect. August 1994 - YouTube](https://i.ytimg.com/vi/j25dh7w48Xs/hqdefault.jpg)
Submarine Battery Bank shorted.Initially called ball lightning, now Leidenfrost Effect. August 1994 - YouTube
![Submarine, battery room The batteries are placed on stepped floors, and access to the battery compartments is provided by means of a trolley placed just b… | Uboot Submarine, battery room The batteries are placed on stepped floors, and access to the battery compartments is provided by means of a trolley placed just b… | Uboot](https://i.pinimg.com/originals/7c/23/c4/7c23c4a200775bad549c2ff1d7304fb6.jpg)
Submarine, battery room The batteries are placed on stepped floors, and access to the battery compartments is provided by means of a trolley placed just b… | Uboot
![How a WW2 Submarine Works (Diesel-Electric Submarine / Balao-Class Submarine) US Navy Training Film - YouTube How a WW2 Submarine Works (Diesel-Electric Submarine / Balao-Class Submarine) US Navy Training Film - YouTube](https://i.ytimg.com/vi/rCBJ_0vX3AQ/sddefault.jpg)
How a WW2 Submarine Works (Diesel-Electric Submarine / Balao-Class Submarine) US Navy Training Film - YouTube
![German Industries and the U-boat offensive - Technical pages - German U-boats of WWII - Kriegsmarine - uboat.net German Industries and the U-boat offensive - Technical pages - German U-boats of WWII - Kriegsmarine - uboat.net](https://uboat.net/media/photos/industries_hertha.jpg)
German Industries and the U-boat offensive - Technical pages - German U-boats of WWII - Kriegsmarine - uboat.net
![I just saw here in Quora a WW2 diesel submarine had a full tank range 62,743 miles. How much of today's LITHIUM BATTERIES would need to be installed that submarine to equal I just saw here in Quora a WW2 diesel submarine had a full tank range 62,743 miles. How much of today's LITHIUM BATTERIES would need to be installed that submarine to equal](https://qph.cf2.quoracdn.net/main-qimg-9a9b9056761deaab45408c5c46e4270a.webp)