Graphtec Rechargeable Lithium-ion battery pack, 7.2 V, 2900mAh, 20.9Wh.
The new Graphtec battery pack B-569 can be used with the Graphtec GL240, GL840-M, GL840-WV, GL980 & GL2000 data loggers.
The B-569 battery pack has also replaced the B-517 battery pack and it is backward compatible with the now discontinued GL900-4, GL900-8, GL820, GL220, GL800, GL200A & GL200 Graphtec data loggers.
Note: Lithium-ion battery packs and batteries sold separately are shipped via road freight only.
Due to international freight restrictions on shipping Lithium-ion batteries and battery packs, the Graphtec B-569 battery packs can sometimes be in limited supply. Please contact Lontek first to confirm availability prior to ordering.
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they recommend me another type of battery which works with some other types of data loggers. professionals