This site has limited support for your browser. We recommend switching to Edge, Chrome, Safari, or Firefox.

Order before 12 noon Mon-Fri for same day shipping - click HERE for more info

FREE DPD shipping for orders over £80 - click HERE for more info

Cart 0

Congratulations! Your order qualifies for free shipping You are £80 away from free shipping.
No more products available for purchase

Add order notes
Subtotal Free
Shipping, taxes, and discount codes are calculated at checkout

Li-Ion Rechargeable Battery - 18650


A high quality and high capacity 18650 lithium ion battery. 18650 li-ion batteries are becoming very popular for many applications.

If your RAPT Pill Hydrometer has run out of juice then this is the battery you'll need. The RAPT Pill Hydrometer is specifically calibrated according to the weight distribution and density of this 18650 Li-ion battery ensuring that you can get accurate gravity measurements time and time again.

If your battery is showing any of the following signs then it is probably a good idea to replace it:

1: If it loses charge in a short period of time (such as a day or two or even less)

2: If it is reduced in capacity by 80% percent or more

3: You see a significant increase in recharging time.

4: If it gets hotter than normal when charging (note - all rechargeable batteries will warm up when charging to some degree).

5: If there is any physical damage to the battery.

6: If it is more then 2-3 years old.

This Li-ion battery can also be used in any electrical device which requires an 18650 Li-ion battery.

  • Order before midday (mon - fri) for same day shipping
  • Orders over £80 ship with DPD next day service
  • Smaller items ship with royal mail from £2.90

Prices are calculated at the checkout. Please see our full shipping policy here.

Free next day delivery on orders over £80

Li-Ion Rechargeable Battery - 18650

Brewing frequently asked questions

How long does it take to brew beer?

The time it takes to brew beer can vary, but on average, the process takes about 4 to 6 weeks. This includes the various stages such as malting, mashing, boiling, fermenting, conditioning, and bottling. However, some beer styles may require longer aging periods for optimal flavor development.

Is home brewing worth it?

Many people find home brewing to be a rewarding and enjoyable hobby, allowing them to create unique and customised beers. It provides a deeper understanding of the brewing process and offers the opportunity to experiment with different ingredients and styles. Additionally, home brewing can be cost-effective in the long run compared to purchasing craft beers. However, it requires time, effort, and a certain level of commitment. Whether it's worth it ultimately depends on one's passion for brewing and the satisfaction derived from the process and the end product.

Is home brewing legal?

Home brewing for personal use is generally legal, and there is no need for a specific license as long as certain conditions are met. Home brewers are allowed to produce beer, wine, and cider for personal consumption. However, there are limits on the amount that can be brewed without a license. As of January 2022, the limits were 100 litres for beer and 100 litres for wine per household.

It's important to stay informed about any updates or changes in the regulations, so it's advisable to check with local authorities or brewing associations for the most current information regarding home brewing laws in the UK. Always ensure that you comply with the relevant regulations and guidelines to enjoy home brewing within the legal framework.

Need some advice?

If you would like some help and advice on what products to purchase, please don't hesitate to get in touch with one of our expert team here.