- Product Details
- Shipping and Returns
- The BPZ Promise
- Why Bulletproof Zone?
The Streamlight SL-B34 is a lithium-ion battery pack designed as an extra or replacement power source for the Streamlight MegaStream flashlight. Its 3500mAh capacity supports runtimes of up to 13 hours in the MegaStream, and it recharges via USB-C in or outside the flashlight without a separate smart charger.
Extended Runtime When It Counts
The SL-B34's 3500mAh lithium-ion cell delivers up to 13 hours of runtime in the MegaStream flashlight. For professionals who carry a light through a full shift, that capacity means fewer interruptions and less time managing power mid-task. Keeping a charged spare on hand extends operational readiness without requiring a dedicated charging station.
Charge Anywhere, No Extra Hardware
The SL-B34 charges through a USB-C port, so any USB-C cable and a standard wall adapter, car charger, or power bank will do the job. Charging works whether the battery is seated inside the MegaStream or removed, with no proprietary smart charger required. A built-in indicator light shines red while charging and green when the charge is complete, removing any guesswork about readiness.
Know Your Power Level at a Glance
A built-in battery indicator shows remaining power, so there is no need to guess whether the pack is ready before heading out. Checking charge status takes a moment and does not require the battery to be installed in the flashlight.
Features
- MegaStream Compatible: Designed as an extra or replacement battery for the Streamlight MegaStream flashlight.
- 3500mAh Capacity: Supports up to 13 hours of runtime in the MegaStream.
- USB-C Charging: Recharges in or outside the flashlight; no smart charger required.
- Charge Indicator: Red/green LED shows charging status and charge completion.
- Battery Level Indicator: Built-in display shows remaining power before use.
Specifications
| Specification | Detail |
|---|---|
| Model | SL-B34 |
| Brand | Streamlight |
| Battery Type | Lithium-ion |
| Capacity | 3500mAh |
| Runtime (MegaStream) | Up to 13 hours |
| Charging Port | USB-C |
| Compatible Flashlight | Streamlight MegaStream |
| Country of Origin | US |
| Weight | 0.15 lb |
| UPC | 080926221314 |
Who This Is For and Isn't
The SL-B34 suits MegaStream flashlight owners who want a spare or replacement battery for extended shifts, range sessions, or any situation where recharging mid-use is not practical. Its USB-C charging makes it easy to top off with common cables already in a kit or vehicle.
The SL-B34 is compatible only with the Streamlight MegaStream flashlight and is not a standalone flashlight or charging hub. It does not include a USB-C cable or wall adapter.
Common Questions
Which flashlight does the SL-B34 work with?
The Streamlight SL-B34 battery pack is designed specifically for the Streamlight MegaStream flashlight. Compatibility is confirmed for the MegaStream only.
Does the SL-B34 require a special charger?
No dedicated smart charger is required. The SL-B34 recharges via its USB-C port using any standard USB-C cable and power source, and it can be charged either while seated in the MegaStream flashlight or removed from it.
How do I know when the SL-B34 is fully charged?
The SL-B34 has a built-in LED indicator that shines red during charging and switches to green when charging is complete. A separate battery level indicator shows remaining power so the pack's readiness can be checked before use.
How long does the SL-B34 power the MegaStream flashlight?
The SL-B34's 3500mAh lithium-ion cell delivers runtimes of up to 13 hours in the Streamlight MegaStream flashlight. Actual runtime will vary depending on the output mode used.
Bulletproof Zone will ship orders as soon as possible. For example, if you purchase three items, they will be shipped to you based on lead time and availability. This way you get as much of your order as soon as possible, which means that your order may come in separate packages, especially if you order products from different manufacturers.
We will bear the shipping cost for products returned because of product defect, misrepresentation, or false description. Afterward, we will initiate a full reimbursement should you decline an offer to replace the item with the same item of equal value and assured quality.
Order Confirmation:
As soon as you place your order with Bulletproof Zone, you will receive an order confirmation e-mail. This means that your order has been logged in our system and your credit card has been pre-authorized for the purchase. Afterward, we contact our suppliers to confirm the availability of the product you are ordering for immediate shipment. If your item is on backorder or unavailable, we will cancel the pre-authorization and duly inform you via e-mail.
Order Shipment:
Orders are shipped within five business days from the date of your order unless specified otherwise on the product page. The product page will contain the most accurate estimate on shipping and lead times. Shipping and lead times provided on the product page are our best estimates based various factors including order volume, information from our manufacturer, raw material fluctuations, etc., and may vary due to these factors.
You will receive an email containing the tracking information of your order after the order has been shipped to your location. If you do not receive tracking information from us within seven business days of the lead time specified on the product page, feel free to follow up with us at orders@bulletproofzone.com.
Bulletproof Zone is not responsible for lost or stolen packages. A tracking number will be provided when the package is shipped. It is the buyer’s responsibility to provide a safe place to receive mail. Once an item has been marked as delivered by the carrier, the seller is not responsible should that item go missing.
Some of our products are carried by manufacturers in various countries. Due to the nature and cost of the products that Bulletproof Zone sells, you may be charged additional import duties upon delivery. Our support team can help in investigating abnormally high import duty charges but we are unable to cover the cost of any import duties.
Damages:
We take full responsibility for any obvious damage to your product caused by wrong packaging or delivering an already defective product. Please inspect the packaging of your item(s) when they arrive, if you notice any damage, you should document it when signing for delivery. If the item(s) contained in the package arrives damaged, please send photos to support@bulletproofzone.com, and we will process an insurance claim on your behalf.
Returns and Cancellation Policy:
We back all our products with a customer satisfaction guarantee, so we created a fair return and cancellation policy.
All sales are final. No Refunds, No Cancellations. In most cases, once the order is processed, it is final and not cancellable. We may allow exceptions due to an order error or wish to return your order after delivery for any reason other than a product defect or misrepresentation. Any cancellation request is subject to an administration and cancellation fee equal to 10% of your order with a minimum of $35, whether order shipment is successful or not.
All sales are final on all closeout items and for custom manufactured bulletproof clothing once the manufacturing process has begun or not returnable unless there is a product defect or misrepresentation. Applicable to brands such as MC Armor, Israel Catalog, BulletBlocker, Tacticon Armament, Wonder Hoodie, and others.
Before returning any product, you MUST obtain a return authorization from our customer service representative. We can only process AUTHORIZED returns for items.
To make a Return or Exchange:
- Obtain authorization for return or exchange by emailing us at support@bulletproofzone.com explaining the reason for the return or exchange.
- Please use or indicate your order number as attention
Return or exchanges request submission must be within 14 calendar days upon receipt of shipment unless noted otherwise on the product description page. Your return must be in original packaging and unused.
We encourage using USPS flat-rate shipping in returning products to receive a shipping expense refund. Buyers must ensure all returned parcels delivery receipt AND signature confirmation. We highly recommend insuring your parcel as we cannot issue a refund for an item that we do not receive back should it get lost/damaged during transit.
Refunds:
Should an item be returned because it was defective, misrepresented, not as described, etc., Bulletproof Zone will issue a full refund and will reimburse the customer for all shipping expenses associated with the return.
Please allow 5-10 business days from the time the item is received to process a refund. Refunds will only be issued to the original credit card that you use when placing your order.
We stand behind our products 100%!
By purchasing any of our items, the buyer certifies they have read and agree to our shipping, return, and privacy policies.
The Bulletproof Zone Promise
When you buy body armor, you're buying your safety. We don't take that lightly. Here's what every order from Bulletproof Zone includes.
1. Authorized dealer of every brand we carry
Every plate, vest, and carrier we ship comes from the manufacturer directly to our warehouse. We don't sell gray-market product, surplus, or returns. That means factory-fresh stock, the full manufacturer warranty, and real after-sale support — the kind only an authorized dealer can offer.
We maintain authorized-dealer relationships with America's leading body armor brands, including Spartan Armor Systems, AR500 Armor, RMA Defense, Shellback Tactical, Caliber Armor, DFNDR Armor, Protection Group Denmark, BulletSafe, BulletBlocker, and over 40 more.
2. Best price, guaranteed
If you find a lower price at another authorized dealer of the same product within six months of your purchase, we'll refund the difference.
Why the "authorized dealer" requirement? Because gray-market and surplus armor may not be genuine, may have a compromised supply chain, and almost never comes with a manufacturer warranty. We won't price-match against products that may not actually protect you.
3. Free fitment consultation
Body armor only protects you if it fits. Email us a photo and your measurements before you order, and one of our specialists will help you size your carrier and plates correctly — at no charge, no obligation.
4. Trusted by thousands of customers
Bulletproof Zone has been a trusted authorized dealer of America's leading body armor manufacturers for over five years. We have over 4,000 verified Trustpilot reviews from real customers across all 50 states.
Price Match Guarantee — Terms
- You must have purchased the item from our website before requesting the price match.
- Discounted items and "free with purchase" items are not eligible.
- The item must be in stock on the competitor's website at the time of your request.
- The price match is valid for six months from the date of your purchase.
- The competitor must be an authorized dealer of the product. Auction sites (eBay, Overstock), discounters, and gray-market resellers do not qualify.
- The competitor must operate an online store. Brick-and-mortar-only retailers do not qualify.
- Price match applies to the item price plus shipping. Sales tax is excluded.
To request a price match, email us a link to the product on our site and the same product on the competitor's site within six months of purchase. We'll process the refund.
Why Bulletproof Zone?
At Bulletproof Zone, we are passionate about protecting lives. Every piece from our catalog is designed and rigorously tested to provide the highest quality of protection you need from firearms, explosives or even close quarters combat.
We’ve partnered with various manufacturers that operate within the United States under a strict set of guidelines both on a national and corporate level so that when you shop with us, you will be able to select from the highest quality body armor, ballistic plates and tactical gear available on the market.
Whether you are a military service member looking to find your own gear, a professional that operates in the security field, or an avid firearms enthusiast that capitalizes the importance of safety when shooting, our tactical gear will provide you the level of protection you need.
Any questions or concerns? Please call us at (408)-909-4938 or email us at support@bulletproofzone.com and a member of our professional support team will be in touch with you as soon as possible.