Beside that, they do make some other accessories as this SF-18 External Battery Pack for Canon presented here.
YongNuo SF-18 is identical in appearance and function to Canon's own CP-E4 External Battery Pack.
Batteries in older Speedlites or more current Speedlite 580EX II, 600EX-RT and Macro Lite MT-24EX and MR-14EX II flash units usually provide enough power for most uses. But when sometimes a big number of photos requires a flash or in case the flash needs to recycle really quickly and want to use a high power burst of flash frequently. An external battery pack provides exactly the extra power source to help you accomplish the task.
Especially strobists who make use of flash extensively should consider an external battery pack like the Canon CP-E4 or a well made clone like the YongNuo SF-18 at a fraction of the cost. Eight extra AA batteries, reduce the flash recharge time drastically while they extend the time between battery changes.
Packaging & Contents
|Wrapped in the box exist the External Battery Pack with its coiled cable, a versatile soft padded case, a long 1/4"-20 thumb screw with a rubber gasket and a sheet of paper with operation instructions .|
The Battery Pack
|The casing and features are exactly the same as with Canon's CP-E4 and if it weren't for the YongNuo labels it could be easily mistaken for it.|
YongNuo SF-18 External Battery Pack manual page is simple and basic naming the parts and explaining how to open, load and attach the pack on a camera (click to enlarge).
The Carrying Case
|The rear side of the case features a dual strap loop for either vertical or horizontal attachment of the case on a strap or a belt.|
The Battery Tray
|By pushing-in a small button at the bottom of the battery pack body and sliding the cover a little to the right, the battery tray pops out a bit. Then it is easy to pull it out all the way revealing all of the eight battery cell sockets.|
Using with a Flash
Following are a couple of examples of how the SF-18 is connected to the Canon 580EX II and the Canon 580EX Speedlite flashes.
Attachment MethodsDirectly Attached on a Camera
By being a direct replica of the Canon CP-E4 battery pack, the SF-18 maintains the ability to be attached on a camera tripod socket at its bottom via a long 1/4"-20 thumb screw.
|Once more coming from Canon the SF-18 has a pass through hole in the upper section which accepts the long stem 1/4"-20 screw.|
|After passing through the long screw, which actually requires a little screwing at the end so as to stay on as a captive screw, then the accompanying rubber gasket should be set acting as an insulation between the battery pack end the camera base.|
Attached on a Waist Belt or a Camera Bag Shoulder Strap
Since the SF-18 spiral connector cable has ample length to allow for movement, a more appropriate carrying method would be by attaching the carrying case via its dual strap loop on the back.
|Here the SF-18 External Battery is shown with a waist belt passed through the padded case dual strap loop horizontally.|
|Alternatively the YongNuo SF-18 External Battery mounted on Camera Bag shoulder strap via the strap loop openings at the back of the padded case.|
Carried via a Shoulder Strap
|Even without the carrying case the SF-18 External Battery pack can be carried around using a camera strap or equivalent; since it sports a narrow slot on its top section, but wide enough to let a camera strap pass through.|
Attached on a Light Stand
|YongNuo SF-18 External Battery strapped on a light stand pole via the Velcro strap which exists on the front of its padded case. Here is shown in operation connected to a Canon speedlite 580EX II flash in slave mode.|
|Closeup detail of YongNuo SF-18 External Battery strapped on thre light stand pole.|
Compatible Canon Flashes
- Speedlite 540EZ,
- Speedlite 550EX,
- Speedlite 580EX,
- Speedlite 580EX II,
- Speedlite 600EX-RT,
- Macro Ring Lite MR-14EX,
- Macro Ring Lite MR-14EX II and
- Macro Twin Lite MT-24EX
- Speedlite YN500EX,
- 2.4GHz Speedlite YN560 IV,
- Speedlite YN600EX-RT,
- Macro Flash YN-14EX,
- Macro Flash YN-14M
Very low price compared to original Canon product.
Very good quality for the price.
Decreases flash charge time significantly.
Extends flash battery life.
Adds 415 gr of extra weight (with batteries and case) when carried around.
Quite bulky to be carried screwed under the camera.
As I had mentioned in similar situations, where the user is to choose between an original and a clone product, a professional or serious enthusiast photographer wouldn't look at cheap alternatives and really shouldn't since maximum reliability can only be assured with an original Canon product (or at least maximum accountability for any failure).
On the other hand, there is always a great market segment of enthusiasts and beginners that would like to experiment with strobes more than a spontaneous use and are not prepared to spend the sizable amount required for the original Canon product. In this respect YongNuo SF-18 External Battery Pack is a very decent quality alternative doing exactly the same job at a fraction of the cost.
For the record, I have spent a couple of years by now, with two copies of the YongNuo SF-18 battery pack without any problems so far.
I hope you found the article useful, thank you for viewing.
All Photos & Photosynths: © 2014-2015 S.C.Vlachos
Price & Availability
Prices for the YongNuo SF-18 Battery Pack vary depending on the source. That is between US$ 43.00 and 53.00 in the US or GBP 32.00 and 47.00 in the UK or EUR 43.00 and 50.00 in EU . The SF-18 is available from Amazon or from eBay.
As it has become common with products of Chinese origin, identical looking battery packs are also marketed under different brand names and prices vary, however there is no guaranty that they function the same.
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