# LiTHELi U20BY09 20V 4.0Ah Battery Pack

The LiTHELi U20BY09 battery pack is listed as a 20V, 4.0Ah rechargeable lithium-ion replacement for U20 power tools. Its listing also describes USB-C charging for personal electronics, but the package contents are not specified.

- [Original product page](https://best-deals.pro/product/litheli-u20by09-20v-4ah-battery-pack)
- [View offer](https://best-deals.pro/visit/litheli-u20by09-20v-4ah-battery-pack)
- Market: US
- Language: en-US
- Currency: USD
- Brand: LiTHELi
- Model: U20BY09
- Price: 29.99 USD
- Previous price: 49.99 USD
- Discount: 40%
- Price checked: 2026-11-14T07:07:47.571Z
- Rating: 4.4 / 5
- Reviews: 35

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- Listed as a replacement battery for LiTHELi U20 tools.
- Product details specify 20 volts and 4 amp-hours.
- The feature description claims up to 45W output and a two-way USB-C port for charging electronics.
- The listing claims a 20,000mAh capacity and estimates up to 0.8 laptop, 1.8 phone, or 1.2 iPad charges, and 20 minutes of garden-tool operation.

## Pros

- Combines a listed U20 tool battery with a two-way USB-C port for charging compatible electronics.
- The 4 amp-hour capacity is explicitly stated in the product details.

## Specifications

### Identity
- Brand: LiTHELi
- Model: U20BY09
### Power and battery
- Battery type: Lithium Ion
- Capacity: 4 amp\_hours
- Voltage: 20 volts
- Rechargeable: Rechargeable
- Amperage: 4 A
### Listed outputs and uses
- USB-C output claim: up to 45W
- USB-C port: two-way USB-C input/output port
- Power-bank capacity claim: 20,000mAh
- Recommended use: Indoor/Outdoor
### Dimensions and installation
- Dimensions listed: 6.1 x 4.1 x 2 inches
- Weight listed: 1.1 pounds

## Before you buy

- The listing is inconsistent about battery count and capacity: product details say five lithium-ion batteries are included and specify 4 amp-hours, while the features describe a 20,000mAh U20 SUPER BATTERY. Confirm the selected product's exact configuration and whether it is the USB-C U-Battery Plus before buying. The listing does not provide an explicit package inventory.

## A good fit for

- Owners of LiTHELi U20 tools seeking a listed 20V replacement battery.
- Buyers interested in using a battery pack for compatible electronics through USB-C, after confirming this listing's exact configuration.

## Less suited to

- Buyers who need a confirmed package inventory or verified USB-C capability for the exact selected battery.

## Customer feedback

Aggregate ratings lean positive, with most ratings in the five-star category, but a smaller portion are one-star and some are mid-range. Without written customer feedback, the ratings do not explain what buyers liked or disliked. They should not resolve the listing's uncertainty about whether this is the USB-C-capable configuration.

## Frequently asked questions

### Which tools is this battery listed for?
The listing describes it as a replacement for LiTHELi U20 power tools. It does not establish compatibility with other tool platforms.
### Does it charge phones or laptops over USB-C?
The feature text claims a two-way USB-C input/output port and up to 45W output. Because the listing also describes differing battery configurations, confirm that the selected item includes this capability.
### How many batteries are included?
The product details claim five lithium-ion batteries are included, but no explicit package inventory is supplied. The listing also describes a singular battery pack, so confirm the selected listing's contents.

## Alternative options

- [Litheli U20 4-in-1 Mix Smart Charger, 100W Fast Charging Station for All U20 Batteries, Versatile Portable Charger, 30-Minute Fast Dual Charging](https://best-deals.pro/visit/litheli-u20by09-20v-4ah-battery-pack)
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- [DTK Replacement for Hyper Tough 20V Battery 3000mAh Cordless Power Tool \| 1 Pack](https://best-deals.pro/visit/litheli-u20by09-20v-4ah-battery-pack)
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- [DTK 2 Packs Battery Replacement for Ryobi 40V Battery 6.2Ah OP4040 OP4026 OP4030 OP4050 OP4060A](https://best-deals.pro/visit/litheli-u20by09-20v-4ah-battery-pack)
- [DTK Replacement for Kobalt 40V Battery 2800mAh Fit All 40V Series Cordless Power Tools Batteries 2 Packs](https://best-deals.pro/visit/litheli-u20by09-20v-4ah-battery-pack)
- [LiTHELi 20V 4.0AH Lithium Ion Battery Pack, Only Fit 20V Power Tools](https://best-deals.pro/visit/litheli-u20by09-20v-4ah-battery-pack)
- [Litheli Electric Lawn Mower Cordless,Grass Cutter Machine for 1300 Sq. Ft. Lawnmower with 13 in Cutting Width, 8 Gallon Capacity, Cutting Height from 1 in to 2.5 in, Includes 1 4.0 Ah Battery](https://best-deals.pro/visit/litheli-u20by09-20v-4ah-battery-pack)
- [Litheli 14 Inch Cordless Lawn Mower, Brushless Battery Powered Push Mower with 5.0Ah Battery, 5-Position Height, 9-Gallon Bag, Lightweight Grass Cutter for Small to Mid-Sized Yards](https://best-deals.pro/visit/litheli-u20by09-20v-4ah-battery-pack)
- [Litheli Cordless Lawn Mower 13 Inch, U20 Handy+ 20V Electric Lawn Mowers for Garden, Yard and Farm, 5 Heights Adjustment, Light Weight,4.0Ah Portable Battery Included](https://best-deals.pro/visit/litheli-u20by09-20v-4ah-battery-pack)
- [Litheli Cordless Lawn Mower 14 Inch, Brushless Motor Push Mower with Zero Maintenance, 5.0Ah Battery & Charger, Cuts up to 3000 Sq. Ft, 5-Position Height Adjustment \(1-2.5 in\), Lightweight Design](https://best-deals.pro/visit/litheli-u20by09-20v-4ah-battery-pack)
- [Litheli 40V 18" Cordless Lawn Mower, Brushless Motor, Electric Mower Battery Powered\(2 x 5.0Ah Batteries\), 2-in-1 Mulching & Bagging, for Small to Medium Yards](https://best-deals.pro/visit/litheli-u20by09-20v-4ah-battery-pack)

## Add-ons

- [Litheli Charger for U20 Battery – 50-Minute Fast Dual Charging, Smart Charging Management, Compact & Portable Design for Efficient Power Sharing](https://best-deals.pro/visit/litheli-u20by09-20v-4ah-battery-pack)

## Images

![LiTHELi U20BY09 20V 4.0Ah Battery Pack — 1](https://best-deals.pro/i/RXecsO9BCopcaFR3ohpdSiOTueAcPZY1IKJkR17yyXmprSoMrrvrpu5VE8F-vIZ2bVHx6GDCFKTNUo9Hbtl-Qio8V6i5kGx16Zk_Om2Q377OTN9j_P8RRtD0.jpg)

![LiTHELi U20BY09 20V 4.0Ah Battery Pack — 2](https://best-deals.pro/i/aIAiQOZiBf4YnEZCPkjIQuJMWt6As-dC2A-QPaLpijB-ekiB1Zck3A5_Z9Lo2Rkg_S8TjY42ugCN63PZA2yqMWi8R2nDi_pppTLaNiSOdAmIRSQkYQ7BZMty.jpg)

![LiTHELi U20BY09 20V 4.0Ah Battery Pack — 3](https://best-deals.pro/i/fjEtfjQ6hqhL0V5Cm6WGg5GnZ_rGDluqDCbn4_KVMn-g8ok9Y_D2_TUK97T8lajYKMTOMyqIMcNyE5CdSu6ZGb3aX7wYWA0xYEY9NnSRTudgNv0Scjc7iT_9.jpg)

![LiTHELi U20BY09 20V 4.0Ah Battery Pack — 4](https://best-deals.pro/i/RXrjXlcwTjOVn4KhHQNDK5I5hn2gvzN7CD5uVKdNSnmk_tFDwxDbeN0c6ifKx2jpi7otCL0aTL8_WTep2l6hAAPM91UncmqW3B2bnp1M3KRwfO3nJHvkqddm.jpg)

![LiTHELi U20BY09 20V 4.0Ah Battery Pack — 5](https://best-deals.pro/i/n0RmKQoKhabEFRWm5MqmZPbUaPJwbYpc7aL-G5IbCC1Haf4pIIfGMIQqYQJJS9IPHqoXU9HvTdfV6o558XzYhBWv4PqAXy4HLIziNO7aBfmdeS59vjrfubod.jpg)

![LiTHELi U20BY09 20V 4.0Ah Battery Pack — 6](https://best-deals.pro/i/7PaSkeWx4OR-uPCgnGVtOPV8Vv3zcHI4zWuFvPmzmXRxAyFrFhrncyNf9PXNZG-tbP4WD4Hmy59xcIpaEVezLD5pcyDnxs17UcgZYg5t24g7aT7eLW4WzuQe.jpg)

![LiTHELi U20BY09 20V 4.0Ah Battery Pack — 7](https://best-deals.pro/i/aQ5BwLoivqt6bzznOD8mIFA9fkY-TLDU3Twao5RL-dhOlOQBtr5EP6E7g5AF6aYu04KSTqd4uAeQAhkyXWzmUawoGqJ5mLebm-D6k_3QV5uOpGdXioPVyYRl.jpg)