Make sure the battery is compatible with your tool brand and battery system. Check the voltage (V), capacity (Ah), and whether it’s an original or third-party model. Most modern batteries are Li-ion.
Batteries
AEG L1840
The AEG L1840S is an 18V battery with 4.0 Ah capacity, providing extended runtime without sacrificing agility. Compatible with AEG’s 18V system, it suits professionals and advanced DIYers needing more power for demanding tasks.
7.8
Capacity
6/10
Quality
9/10
Compatibility
9/10
Value for money
7/10
Total rating: 7.8/10
| Brand | AEG |
| Battery system | AEG 18V PROLITHIUM-ION |
| Product title | L1840 |
| Voltage | 18V |
| Capacity | 4.0 Ah |
| Battery type | Li-ion |
| Weight | 700 g |
| Compatible chargers | 4 |
| Product page | Link |
Compatible chargers
Similar batteries
Compatible chargers
1. AEG BL1218
12V-18V, 4.1 A
800 SEK
The AEG BL1218 charges 12V-18V batteries and has a high charging current for fast recharging. Ideal for users with multiple battery systems in the AEG range and efficient charging. A powerful and versatile charger for various users.
7.8/10
2. AEG AL18G
18V, 2.0 A
750 SEK
The AEG AL18G is a simple yet effective 18V charger with good charging capacity. A cost-effective option for users in the AEG system looking for a functional and reliable charger. Suitable for both DIY enthusiasts and professionals with basic needs.
6.8/10
3. AEG BL18S
18V, 2.0 A
550 – 700 SEK
The AEG BL18S is a compact 18V charger with standard charging and good compatibility. A budget-friendly model for AEG users needing a reliable charger without a fast-charge feature. Perfect for those looking for a simple and functional solution.
6.8/10
4. AEG BL18C2
18V, 4.0 A
1,500 SEK
The AEG BL18C2 is a reliable 18V charger with high charging current and support for multiple batteries. A great choice for fast recharging and a solid addition to AEG’s system. Perfect for those needing a powerful and durable charger.
7/10
Similar batteries
1. AEG L1820S
18V, 2.0 Ah
815 – 1,700 SEK
The AEG L1820S is a compact 18V battery with 2.0 Ah capacity, ideal for shorter tasks where light weight and agility matter. Compatible with AEG’s 18V system, it’s a great choice for users seeking a balance of performance and portability.
7/10
2. AEG L1840R
18V, 4.0 Ah
1,500 SEK
The AEG L1840R is an 18V battery with 4.0 Ah capacity, designed for extended runtime and stable performance. Compatible with AEG’s 18V system, it’s a reliable solution for professionals and advanced DIYers.
7.8/10
FAQ
A quality battery typically lasts 3–5 years with normal use, or up to 1,000 charge cycles. Lifespan depends on how often it’s charged, how it’s stored, and the temperatures it’s exposed to. Well-maintained batteries last longer and perform better over time.
Higher voltage (e.g., 18V or 40V) provides more power, while higher capacity (Ah) extends runtime. Heavy-duty tools require both higher voltage and capacity for best performance.
Charge batteries regularly and avoid full discharges. Store in a cool, dry place and clean the contacts as needed. Always use compatible chargers.
Yes, especially if you work for extended periods or use demanding tools. Extra batteries give you flexibility and reduce downtime. Higher-capacity batteries can also be more cost-effective over time.
