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header-product Battery charger BmaX BH-042100-04U — USB, 4 slots for 18650 3.7V cells
20.49 €

Battery charger BmaX BH-042100-04U — USB, 4 slots for 18650 3.7V cells

Battery charger BmaX BH-042100-04U — USB 4×18650 Photo 1
Battery charger BmaX BH-042100-04U — USB 4×18650 Photo 2
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Battery charger BmaX BH-042100-04U — USB 4×18650 Photo 1
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Battery charger BmaX BH-042100-04U — USB, 4 slots for 18650 3.7V cells

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Battery charger BmaX BH-042100-04U — USB, 4 slots for 18650 3.7V cells

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Short description

BmaX BH-042100-04U is a USB-powered battery charger designed for up to four 18650 3.7V lithium‑ion cells. It provides simultaneous charging of four batteries via USB input, suitable for home, workshop or travel use. The compact unit eases battery maintenance and keeps spare cells ready for flashlights, vaporizers and other 18650-powered devices.
Available for order: 75 pcs.
Warranty: 2 Years
SKU: 10964518
Manufacturer: BmaX
free shipment

Cheapest delivery:

Venipak Locker LV

Pick-up points

Venipak Locker LV

Cost

1.89 €

Deliver

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
07.07.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
10.07.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 0.20 kg)
Parcel couriers
Venipak Locker LV / Latvijas Pasts pakomāts / Unisend LV / DPD Paku skapis / Omniva LV / Venipak Pickup LV / Latvijas Pasts nodaļa
10.07.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.89 €
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Product information

Description

BMAX Four-Slot Battery Charger (model BH-042100-04U) is a compact USB-powered charger designed for 3.7V lithium‑ion cells, including 18650 and several other cylindrical sizes. The unit charges up to four batteries independently with separate slots and provides automatic cutoff at full charge to protect cells from overcharging.

Advantages

The charger supports independent charging in four slots so each battery is treated separately. A dual-color indicator shows charging status (red while charging, green when full). Built-in multi-layer protection — including overcharge, over-discharge, reverse polarity, overvoltage, overheating and short-circuit protection — increases safety during charging. USB power input allows use with common USB adapters, power banks or computer ports.

Suitable for

  • Charging 18650 lithium‑ion cells
  • Charging other compatible cylindrical Li-ion sizes: 10440, 14500, 16340, 16650, 14650, 18350, 18500
  • Home, workshop or travel battery maintenance
  • Preparing spare cells for flashlights, vaporizers and similar 18650-powered devices

Key specifications

  • Compatible battery models: 10440, 14500, 16340, 16650, 14650, 18350, 18500, 18650
  • Charging cutoff voltage: 4.23 V
  • Output voltage/current: DC 4.2 V, 1000 mA (per slot)
  • Input: DC 5 V, 1–2 A (USB)
  • Battery slots: 4 (independent)
  • Chemical composition: lithium‑ion
  • Protections: overcharge, over-discharge, reverse polarity, overvoltage, overheating, short circuit
  • Dimensions: 90 × 30 × 122 mm
  • Weight: 106 g
  • Package contents: 1 × charger (batteries not included)

How to use

Connect the charger to a suitable USB power source using a standard USB cable. Insert batteries into the slots observing correct polarity. The indicator turns red while a battery charges and switches to green when charging is complete; the charger automatically stops charging at the cutoff voltage. Remove fully charged batteries from the charger before storage.

Usage recommendations

Use a USB power source that can supply sufficient current (1–2 A) and avoid leaving batteries in the charger for prolonged periods after they reach full charge. Do not insert damaged batteries and follow manufacturer safety guidelines for lithium‑ion cells.

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Customer reviews

Customer questions

FAQ

How much does the Battery charger BmaX BH-042100-04U — USB 4×18650 cost, and is it available for purchase?

The price is 20.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 75 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 07.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

What is the warranty period?

All BmaX products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized BmaX service centers and through AiO.lv

Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. We will assist with consultation, warranty claim processing, and coordination with certified service centers.
warranty
14-Day Return Policy We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
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Fast Delivery Get your orders as quickly as possible — right to your door, parcel lockers, or pickup points across Latvia and the EU.
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Secure Payment Pay the way you prefer: cash, VISA, MasterCard, Apple Pay, Google Pay, bank transfer, or 0% installment plan.
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Quality Since 2008 AiO.lv has been on the market for over 18 years and has earned trust — with more than 6000 genuine positive reviews on Google.