Uploaded March 2020 | Updated September 2026, 2 days ago
This build is a 1.3 kwh battery inside an ammo can at 48 volts!
I'm using 168 lithium cells. These cells are called "18650" for the size. Each cell is rated for 3.6v and 2200 mah. This means each cell is about 7.92 watt hours of capacity. When we add them all together this ammo can contains about 1.3 kwh (kilo watt hours). I arranged the cells in a 12p14s for a nice 48 volt battery.
Inside the ammo can I included a 20 amp circuit breaker and a 60 amp BMS. This provides protection built right into the enclosure. By using a real military metal ammo can, we have fire protection.
I used a 20 amp circuit breaker to limit the discharge. This is in an effort to keep the heat from building up. However, the charge current should be half of this.
Thank you to HBPowerwalls YouTube Channel: youtube.com/user/nocrf50here
K-weld is sold by 18650ed, Keith is the owner. 18650shrinkandcellholders.com/kweld/?fbclid=IwAR31sKwkz9pi7WjJ2YMQQSjnNOo60CzxghahmdyS1Jv59NR0pfcaLHY2YpI
18650ed Ebay Store: ebay.com/str/18650shrinkandcellholders
The ammo can came with the positive and negative posts already installed by Battery Hookup. I also used the nickel fuse strips from battery hookup. When buying from Battery Hookup please use my coupon code "davidpoz" for 10% off your orders. This also tracks the affiliate program, which helps out this channel. Thank you.
If you would like to help support the channel, you can do so through the affiliate links below, and/or through Patreon. Thank you. patreon.com/DavidPoz
Battery Hookup affiliate links:
Modem Packs: batteryhookup.com/products/4-18650-2200mah-cells-in-modem-batteries?rfsn=3333666.ca06e9
Ryobi Packs: batteryhookup.com/collections/green-friday-weekend-deals/products/ryobi-op4026v-36v-batteries-for-parts-repair?rfsn=3333666.ca06e9
Nickel Fuse Strips: batteryhookup.com/collections/cell-level-nickel-fuse/products/nickel-fuse-2p-wide-continuous-roll-by-the-foot-18650-cell-level-fusing?rfsn=3333666.ca06e9
Amazon affiliate links:
ISDT Cell Checker: amzn.to/3cV7Upa
JST-XH Connectors: amzn.to/2w0QSVX
Solder Iron: amzn.to/38OtzMm
Flux: amzn.to/2TWsHjo
Solder: amzn.to/2W4p6T7
Aliexpress Affiliate Link:
Daly BMS: https://s.click.aliexpress.com/e/_d6XCdHf
“As an Amazon Associate I earn from qualifying purchases.”
This build is a 1.3 kwh battery inside an ammo can at 48 volts!
I'm using 168 lithium cells. These cells are called "18650" for the size. Each cell is rated for 3.6v and 2200 mah. This means each cell is about 7.92 watt hours of capacity. When we add them all together this ammo can contains about 1.3 kwh (kilo watt hours). I arranged the cells in a 12p14s for a nice 48 volt battery.
Inside the ammo can I included a 20 amp circuit breaker and a 60 amp BMS. This provides protection built right into the enclosure. By using a real military metal ammo can, we have fire protection.
I used a 20 amp circuit breaker to limit the discharge. This is in an effort to keep the heat from building up. However, the charge current should be half of this.
Thank you to HBPowerwalls YouTube Channel: youtube.com/user/nocrf50here
K-weld is sold by 18650ed, Keith is the owner. 18650shrinkandcellholders.com/kweld/?fbclid=IwAR31sKwkz9pi7WjJ2YMQQSjnNOo60CzxghahmdyS1Jv59NR0pfcaLHY2YpI
18650ed Ebay Store: ebay.com/str/18650shrinkandcellholders
The ammo can came with the positive and negative posts already installed by Battery Hookup. I also used the nickel fuse strips from battery hookup. When buying from Battery Hookup please use my coupon code "davidpoz" for 10% off your orders. This also tracks the affiliate program, which helps out this channel. Thank you.
If you would like to help support the channel, you can do so through the affiliate links below, and/or through Patreon. Thank you. patreon.com/DavidPoz
Battery Hookup affiliate links:
Modem Packs: batteryhookup.com/products/4-18650-2200mah-cells-in-modem-batteries?rfsn=3333666.ca06e9
Ryobi Packs: batteryhookup.com/collections/green-friday-weekend-deals/products/ryobi-op4026v-36v-batteries-for-parts-repair?rfsn=3333666.ca06e9
Nickel Fuse Strips: batteryhookup.com/collections/cell-level-nickel-fuse/products/nickel-fuse-2p-wide-continuous-roll-by-the-foot-18650-cell-level-fusing?rfsn=3333666.ca06e9
Amazon affiliate links:
ISDT Cell Checker: amzn.to/3cV7Upa
JST-XH Connectors: amzn.to/2w0QSVX
Solder Iron: amzn.to/38OtzMm
Flux: amzn.to/2TWsHjo
Solder: amzn.to/2W4p6T7
Aliexpress Affiliate Link:
Daly BMS: https://s.click.aliexpress.com/e/_d6XCdHf
“As an Amazon Associate I earn from qualifying purchases.”
