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WARNING! Lithium batteries are dangerous and can easily explode if mishandled. If you don't know what you're doing, don't do it. Not only will this kill you, it'll hurt the whole time you're dying. These parts were made to be a lighter…
This 3D-printed battery holder is designed to securely hold six 21700 lithium-ion cells in a 3S2P configuration . Delivering 11.1V nominal output, it’s perfect for compact and lightweight battery builds, whether you're working on RC…
I made a model of a very light cell holder for assembling a 4s1p 21700 battery… 2025 06 28 v. 2
For more information see my blog post about this setup. A sleeve that you are meant to mount the 21700 cell holders to (I used VHS tape) that slides over the 18650 cell holders Triangle pieces that are meant to be mounted to the back of…
Dual 21700 Box Easy and Fast Print, No Support, No Problem :) Buy me a Coffee https://www.paypal.me/obuluto
Battery pack based around a cheap IP5389 bidirectional charging module and 4x 21700 batteries (I used Molicel P45B for 4500mAH each) I made it to upgrade my heated jacket battery, double the capacity for just a hair bigger size and…
Distributeur de piles / accus / batteries. Prévu pour être posé, il est stable grâce à son pied arrière. S'imprime en une seule pièce, sans support. Fichier paramétrique f3d (Autodesk Fusion) pour modifier les dimensions des batteries, le…
21700 Battery Box tight tolerances so not too loose. 2mm gap for foam if you want to add extra damping
Use strong metallic Promovec Carrier nXL casing to build new 10S3P pack from 21700 cells. Either build 3 blocks of 3x3 cells plus 1 block 1x3 cells with same dimensions as original 18650 pack and keep innards (lock, bms, connector, light)…
A small UPS for a router or video camera, it can also be used for LED strips.
I needed some holder for 12x 21700 batteries in a staggered pattern for more compact layout and did not find any model here. So I desided to make my own one. Also I added slots for soldering of wires (I don't have tool for spot welding).…
Made this to charge random cells that need charged or I reclaim from lithium battery pack rebuilds. Also works for doing discharge tests. Always use an appropriate charger!! Material list in photos. Would use ¾" and 1" machine screws next…
Single cell holder with included files for 21700 to 18650 cell bushing adapter. Just use a dedicated charger with jumper wires or a power supply with correct settings. 1 - 1/2" #6 machine screw hex head 1 - 1 ¼" #6 tapered machine screw 2…
Simple holder for 16 21700 batteries, with top cover (if you need) Printed with 0.6 nozzle at 0,3 layers
21700 power bank for charging phones, electronics, and for powering USB devices. The USB-A ports are 2 amp output apiece and the USB-C ports are 2 amp inputs and if you plug them both in you can charge the power bank twice as fast when it…
A simple 12 cell holder frame for 21700 lithium ion cells, designed to keep your pack organized and secure. It spaces and supports the cells for building custom battery packs, while maintaining good airflow and easy access for spot…
This case is designed for a Heltec T114 v2, and packs a battery life punch fitting a 21700 cylindrical cell battery, and a 60x30mm 5V solar cell. It can accommodate the optional GPS module, and a walkie-talkie/Baofeng style belt clip can…
I wanted a bracket to install my 21700 test jig on my wall. You can wire up to the terminals on the outside of the 8 channel tester. You can only test either 18650 or 21700 per slot not both at the same time. I feel it is a neater and…
Simple 2P cell holder for 21700 style battery, width for nickel strip is 10mm, gap between cells is 2mm for safety, use O isolating pads for extra safety, gap between series is for nickel strip bend, print with organic supports for best…
Power bank box built for 65w /100w board with 18650 / 21700 batteries up to 5S In the STL archive you will receive files for printing 4s and 5s boxes, where the length is different. You will receive files with and without holes for…
Print in Vase Mode and preferably in hard TPU. Compare to the state before:
Basic cover for the terminals of a Koolux / Hitway BK6S Ebike battery, which uses the Silverfish Battery Case 21700 form factor.
Did you buy the wrong battery size by mistake? I did! Did you also buy the wrong size battery holder? Me, too! Looking for a solution, I found the parent project and loved the original idea, so I scaled it for the 21700 / P42A battery size.
I decided to assemble my own version of the popular 100W power bank board on Aliexpress. For this, 21700 5000 mAh batteries were used. The assembly is extremely simple, you will need to carefully insert the display without damaging it. I…
Lightweight 6S1P battery holder for 21700 li-ion cells. I recommend using high-current tabless cells and spot-welded copper strips. It has guide rails for 10 mm wide strips and holes for balanse leads. Some support material is needed and…
Holds a 21700 battery cell and spring terminals. Specifically designed for these: https://www.amazon.com/dp/B0BXNGYQXS but many will fit im sure.
Working on a totally different project, I needed measurments for a 21700 battery and terminals... had an extra charge controller board (cause buying just one makes no since) so I went ahead and made a charger. But this one takes some…
Had a problem, solved it by designing this stand for my vapes. Thought it could be helpful for other people also. Added the step file, so you can make edits in CAD or slice the file as is.
Cell welder, solderer, glue and 3mm wooden screws are required. I added switches couse charging modules consumes a bit power from batttery while standby. Back female port is for charging. I use charger for gisam tools. For one battery…
Needeed something to stock my batteries. This one is for 6*21700 and 10*18650 Left side is for Monos, right is for pai
Modular 21700 Powerbank. The cheapest branded (samsung etc.) 21700 batteries can be found on nkon.nl (I am not affiliated with them). I am using a cheap ip2368 board from aliexpress for 100w quick charging.
I have few devices that use 21700 batteries, but i only have one. I have ton of 18650 batteries with higher capacity so i thought about using them instead. There are two models, adapter and sleeve. If your device has longer spring (since…
This 21700 battery holder is simple and mainly meant to fit some readily available metal contacts that are found in the common 18650 battery holders. There are 2 versions. If you have the space then go for the big one otherwise the…
I buying my cells and BMS on Akkuteile24.de. There are holes in the spacers for the cable connection to the BMS. BE CAREFUL WHEN YOU SOLDERING THE CONNECTION!!!!
This is my newest battery bank using 25 Telsa 21700 5amp cells. This is updated with cable channels added for easier cable management! Heat Shrink tubing application. https://www.youtube.com/watch?v=gLj-ytjKPAI&t=18s
Simpel 21700 box , to power my hdzero fpv goggle's. I used INR21700-M58 5570mAh - 12.5A cells. Be carefull with this there is no reverse voltage protection if you put the 21700 in backwards you wil damage the device you are powering!! I…
Its a super tight fit, but with good PLA you can spread both clips with your charger and snap it in place. Hole for a charger at the top and it holds super securely. 2 walls 15% crosshatch infill 3 top/bottom layers, I used PolyMaker…
Hello. My proposal for creating battery packs for the size 21700 Print quality 0.2 Material: PLA , PLA + , PETG , Infill according to your reasonin
For the Jumper T15, a larger battery holder has been created to accommodate the Nitecore NL2150 (5000mAh) batteries, which do not fit in the standard battery tray. The Jumper T15 originally supports 21700 lithium-ion cells (Printed on the…
took out the magnet part and added a 2.85mm hole to insert an m3 grub screw into, works well on my other adapters but i liked the look of the original one made by the designer!
I created a holder in this project for the 3.7V lithium-ion battery packs 18650 and 21700. PLEASE SUPPORT ME!
This model is compatible with the lego system.
Drop the battery in the bottom ring then tilt in and snap in place. Best printed at a 30° slanted angle. No supports needed. To that end you can use the version with the slanted edge at the bottom and add just a bit of brim.…
5S 21V 21700 Battery Holder Battery Pack (5s 2p/5s 1p bms) https://www.aliexpress.com/item/1005005254344002.html 4-way PD65W…
27 Nov 2024 Edit: This wasn't quite tall enough for a pair of protected cells I ordered; I'll make an edit to these models to make them taller once I've done a little more testing. An awesome minimal 18650/21700 Lithium Cell holder by…
DIY500AMP.COM This 3D model is a 13S3P battery holder specifically designed for 21700 lithium-ion cells. It allows for secure alignment and spacing of 13 series and 3 parallel configurations, making it ideal for building 48V battery packs…
This 3D model is a 13S3P round battery holder specifically designed for 21700 lithium-ion cells. Its circular design allows for a compact, space-saving configuration, ideal for building 48V battery packs for electric bikes, scooters, or…
Another powerbank case for a popular module from Aliexpress. It is designed to be printed without supports with 0.2mm layer height. Requires 2 M3x10 countersunk screws and 2 M3x12 hex head screws. The screws goes directly into plastic.…
DIY Maersk Shipping contaimner powerbank with 21700 cell. 18W PD module in use from aliexpress or similar https://www.aliexpress.com/item/3256807135744764.html…
21700 Battery Bracket with Screws no weld allow you to create a 10P or any configuration you want without need.
There are four variants of flashlight holder: 18650 - Inside diameter 24 mm (for example for Convoy S2+) Handlebar diameter 22 mm Handlebar diameter 31.8 mm or some gravel bike with eliptical cross-section handlebar with outer cables…
This nose hold 2 21700 Li-ion batteries for weight balancing & has a shock-absorbing function. Print this standing up. TPU 5% Gyroid Infill 2 Perimeters 2 or 3 Top / bottom layer I use 2 of these betteries in the nose and 4 in the…
Carry your spare 21700 battery for the Nitecore P20iX with confidence using this custom-designed case. Built with precision, this case accommodates Nitecore NL2150HPi and NL2153HPi batteries securely, providing both protection and weather…
A simple 21700 battery tray for storage of cells while creating battery packs. Holds 81 cells. You'll need at least an mk3/4 sized print bed.
These are a thin protective end panel to shield the bus on a 21700 2 cell parallel pack I built for a Meshtastic radio. Could absolutely be used in other ways. Here is the video of the pack build!
10S5P for 21700 cells holders square under 7 inches for stack in 20S5P configuration
OpenSCAD parametric cell holder for various cylindrical cells
Summary: The 21700 cell holder is a 3D-printable component designed for securely holding 21700 lithium-ion cells. It combines a lightweight structure with high durability, making it perfect for DIY battery packs, electronics projects, and…
WARNING! Lithium batteries are dangerous and can easily explode if mishandled. If you don't know what you're doing, don't do it. Not only will this kill you, it'll hurt the whole time you're dying. These parts were made to be a lighter…
Copper Nickel sheets https://de.aliexpress.com/item/1005005986261829.html Use 0.2mm/0.4mm Nozzle and PETG for the best result.
This 3D-printed battery holder is designed for 21700 cells and supports configurations of 6S2P or 12S1P, making it ideal for lightweight R/C air applications. The design ensures durability and stability while keeping weight to a minimum,…
This one was designed to replace an ordinary 7A Pb battery in a PC UPC. Now: it holds much higher discharge current; has at least twice bigger capacity; you may charge these LiFePo4 setup with 15A current instead of Pb 0.7A; has less…
Gridfinity Organizer for 18650/21700 Batteries (3x2 Grid, Height 4) Optimize your workspace with this versatile Gridfinity organizer designed to hold up to 5 batteries of either 18650 or 21700 sizes in the same model. This compact…
Designed for a high output e-bike battery project that utilizes 21700 tabless cells and copper+nickel buss plates. Customizable size and shape. Created in Tinkercad. I've added a zip folder with all the parts if you want to custom build a…
13S4P 21700 - 48V 20ah Battery Tray - compatible with 2P Strips
Other versions of such battery-holders were wasting too much space between the batteries and thus too much filament in my opinion, so I created this version. Dimensions : 143mm × 45mm × 34mm fits 6 pieces of 21700 batteries of max…
Dieser modulare Akku-Pack basiert auf 21700 Lithium-Ionen-Zellen und besteht aus 6 individuellen 3S-Modulen . Dank des Stecksystems mit Schwalbenschwanzverbindungen lassen sich die Module ohne Verkabelung verbinden, wodurch eine variable…
21700 Cells Parallel Stackable Tray with Screws – No Welding Required This tray is designed for parallel connections. It has a slot for a nickel or copper strip up to 10mm wide. ⚠ CAUTION: Make sure to install the cells in the correct…
This 3D-printed battery holder is designed for 21700 cells and supports a 2S2P configuration , making it ideal for compact and lightweight energy storage applications. The design ensures durability and stability while maintaining minimal…
This is a battery cell holder for 21700 (21mm in diameter and 70mm in length). If you print two, you can configure a 10s3p, 3s10p, etc...
This is a 18650 battery holder insert for the DEWALT ToughCase+ bit cases. It also fits 18350 and 21700 cells I've tested this with DWASTCASEBLK and DWAN2190 - https://www.amazon.com/dp/B0BB162LNC - https://www.amazon.com/dp/B07Z6XBYJT I…
9x 21700 (Tesla-like) Li-ion battery's 1x 3s BMS (thin, 6-10A) 2x USB Step-down converter / module (QC3.0 support!) 2x Power switches (14x8.5mm) 1x Charge indicator (3s / 12.6v) (21x31.5mm) 1x 5.5x2.1mm power socket 4x 2x20mm screws Note:…
This is an little “print in place” box to store and/or transport 2x21700 Batteries. Print it upright. Brim optional for V1 (depends on your first layer adhesion) (Printing it flat will result in a weak lock bc of the layerdirection)…
This is a battery shell modification for DJI Mini 3 allowing the use of 21700 cells What you need: A BMS (battery monitor sensor) pcb from an original DJI battery. 18 AWG Silicone wire (20 AWG works as well) Battery connectors -…
20s5p 21700 Cellholder 21,3 Cell Diameter 0.2mm Nozzle
20s5p 21700 Cellholder 21,5 Cell Diameter 0.2mm Nozzle
krabička na 8 baterií 21700... zavírání na 6 magnetů o rozměru 5x3mm
This is remix of 18650 holder made from scratch for 21700. Print with supports. You need: Type-C 2S USB BMS 15W 8.4V1.5A -…
This is a 6S4P honeycomb 21700 3 row design 22.2V battery. This design has a base for hold the copper in each corner and a solid base to keep it in place. Is a honeycomb design to keep it slim in 3 row only.
This optimized and lightweight battery tray is specially designed for RC airplane enthusiasts who prefer using high-capacity 21700 cells. The 7S2P configuration provides 25.9V, ideal for high-performance and endurance flight applications.…
No supports necessary, the small hole at the bottom is for a zip tie to keep the battery secured. use two brass paper clips for the battery contacts This is what the brass paper clips look like:…
Title: Center Marking Tool for 21700 Batteries – DIY Battery Building Aid 📝 Description: This simple yet effective tool helps you mark a perfect center dot on the negative or positive terminal of any 21700 battery. Ideal for spot welding…
This 3D-printed battery holder is designed to securely hold six 21700 lithium-ion cells in a 3S2P configuration . Delivering 11.1V nominal output, it’s perfect for compact and lightweight battery builds, whether you're working on RC…
I jig designed to hold up to eight of your 21700 cells together while you spot weld them.
I made a model of a very light cell holder for assembling a 4s1p 21700 battery… 2025 06 28 v. 2
I created two different battery holders to create tubular batteries instead of the standard rectangular/square sized batteries. You can use either 18650 battery cells or 21700 battery cells. These are stackable and fit two different tube…
For more information see my blog post about this setup. A sleeve that you are meant to mount the 21700 cell holders to (I used VHS tape) that slides over the 18650 cell holders Triangle pieces that are meant to be mounted to the back of…
Been experimenting with Li-Ion, LiFePO4, and LTO-cells in different sizes, these are a few different holders I've whipped up over the years. Some of these are quite quick'n'dirty slap-together-jobs, and might have duplicate faces from…
I made this for my Molicel 21700 cells to make 4s2p pack. This fit perfectly from my printer but if you have other brands. Small scaling difference may be required. Also first layer should be 0.2 mm.
Copper Nickel sheets https://de.aliexpress.com/item/1005005986261829.html Use 0.2mm/0.4mm Nozzle and PETG for the best result.
Dual 21700 Box Easy and Fast Print, No Support, No Problem :) Buy me a Coffee https://www.paypal.me/obuluto
This 3D STL model is a precisely designed battery box that holds six 21700 lithium cells , while matching the outer dimensions of a typical 6V/4Ah lead-acid battery . Ideal for DIY projects, custom e-bike battery packs, RC applications,…
This is a dummy model of a battery designed for tolerance and fitting tests. I would greatly appreciate any donations via buymecoffee. https://buymeacoffee.com/danialadh Category: Replacement Parts
This cover will hold two 21700 6S1P or 4S1P batteries securly together using only two battery straps. Dimensions: Internal = 152 x 43.5 x 25mm Support my work: All of my models are available for free. If you'd like to show your…
