The widespread AAA/AA design based on Li-ion is revolutionising mobile power supply for many standard applications. A built-in Li-ion battery with a nominal voltage of 3.6 V to 3.7 V is regulated down to 1.5 V using electronics in the form of a PCB.
The stable and high output voltage makes the 1.5 V lithium-ion rechargeable batteries compatible with all devices that are optimised for operation with disposable batteries and where the low voltage of the NiMH rechargeable battery causes problems. The high voltage results in high performance in many devices, e.g. many torches or fairy lights are brighter or motors (toys, kitchen appliances) run faster than with NiMH rechargeable batteries.
In addition to the constant voltage of 1.5V, the battery offers major advantages thanks to the undervoltage cut-off. Most applications do not have their own undervoltage cut-off, but do not damage the electronically regulated 1.5V Li-ion batteries, as is the case with NiMH/NiCD batteries. 1000 charging cycles are therefore quite possible with the 1.5V lithium-ion battery under real conditions.
Disadvantages: The electronic control only allows the discharge current specified in the key figures. The batteries can only be charged via USB or a suitable charger. Please note: Electric motors, e.g. in toy cars, require several times more current than the specified continuous load when starting up.
Important: Charging the Keeppower 1.5V Li-ion batteries is possible via the integrated micro USB socket or with the XTAR BC4, XTAR L4, XTAR L8, XTAR MX4, XTAR VX4 or Soshine Chocolate 1.5V charger. Charging with a conventional charger for NiMH/NiCD or Li-ion batteries is not permitted.
Chargers for Li-ion 1.5V batteries other than the models listed are not compatible. Charging via USB is possible with any USB 5V connection (smartphone, mains adapter, power bank, laptop, etc.), so you remain flexible and always have a charging option to hand.
https://www.pocketnavigation.de (very detailed information and comparative tests on the 1.5V batteries)
Please note that lithium cells should only be used by qualified persons.
Incorrect handling or short-circuiting can lead to fire or explosion.
Lithium-ion batteries are thermally stable and are not subject to a memory effect.
They work on the basis of lithium and are characterised by a high energy density.
Scope of delivery:
1x 1.5V Li-ion rechargeable battery
When ordered in pairs (2 pieces), a USB cable with two micro USB plugs and a battery storage box are included.
Technical Data
| Model: | P1044U1 |
| Capacity in mWh | 1000 mWh |
| Capacity in mAh | approx. 667mAh |
| Min. capacity in mAh | 550mAh / 0.2C |
| Nominal voltage | 1,5V |
| Charging voltage | 5V USB |
| Standard charging current | 0.14A (140mA) |
| Standard discharge current | 0.255A (255mA) |
| Max. discharge current | 1.5A (1500mA) |
| Charging current | 0.xx – 0.12A via USB |
| positive pole | increased (button top) |
| Achievable number of cycles | approx. 1000 cycles |
| Diameter | 10.35 mm ± 0.2 mm |
| Height | 44.9 mm ± 0.5 mm |
| Weight | 8 g ± 1 g |
| Download: Data sheet | P1044U1 |
| Charging current normal | 0.xx – 0.3A (300mA) |
| Input | 5V USB |
| Charging operating temperature | 0 °C – 45 °C |
| Operating temperature discharging | -20 °C – 60 °C |
| Recommended storage temperature | +25±5 ℃ |
Operating principle:
When using a high-quality 3.7V Li-ion battery with 270mAh, the energy is up to 1000mWh. After the output voltage has been reduced to a constant voltage of 1.5 V by the electronics, this corresponds to a capacity of 667mAh.
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